# Top 100 accounting firms in the United Kingdom

Tamtam tracks 358 accounting firms headquartered in the United Kingdom. This list ranks the 100 largest by number of employees on LinkedIn, led by EY, KPMG UK and PwC UK. Their median headcount is 473. Half of them were founded in 1969 or later. The most common headquarters are London (50), Brighton (2) and Dundee (2).

These are the largest accounting and professional services firms in the United Kingdom, led by EY with over 400,000 employees globally. Other significant firms include KPMG UK, a provider of tax, audit, and advisory services, PwC UK, which focuses on building trust and solving problems, and Azets, a professional services firm in Northern Europe. BDO UK offers tax, audit, and advisory services, while Grant Thornton UK provides assurance, tax, and advisory. Davies specializes in professional services and technology for the insurance sector.

A clear pattern among these companies is their headquarters location: almost all are based in London. Notable exceptions include Tax Consultant in Brighton and Cooper Parry, which states its headquarters simply as "UK". The founding dates of these firms span from the mid-19th century, with Cooper Parry founded in 1850 and MHA in 1880, to more recent establishments like KPMG UK in 1987 and RSM UK in 1988, indicating a mix of long-established and relatively newer large firms.

🇬🇧 United Kingdom · 100 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [EY](https://www.tamtam.ai/c/ey) (ey.com)<br>A global organization with diverse teams in over 150 countries provides assurance, consulting, law, strategy, tax, and transactions to help clients grow and transform | Professional Services | 🇬🇧 London | 404,207 |  |
| 2 | [KPMG UK](https://www.tamtam.ai/c/kpmg-uk) (kpmg.com)<br>A leading UK provider of tax, audit, and advisory services with a global presence, focusing on innovative solutions and expertise for clients' needs | Business Consulting and Services | 🇬🇧 London | 15,102 | 1987 |
| 3 | [PwC UK](https://www.tamtam.ai/c/pwc-uk) (pwc.co.uk)<br>Professional services firm focusing on building trust in society and solving important problems through partnership and commercial expertise. | Accounting | 🇬🇧 London | 10,873 |  |
| 4 | [Azets](https://www.tamtam.ai/c/azets) (azets.com)<br>A leading professional services firm in Northern Europe, providing advisory, accounting, audit, HR, recruitment, outsourcing, and technology solutions to clients | Accounting | 🇬🇧 London | 7,523 |  |
| 5 | [BDO UK](https://www.tamtam.ai/c/bdo-uk) (bdo.co.uk)<br>Provides tax, audit, assurance, accounting, business advisory, and outsourcing services to diverse sectors with a client-focused, innovative approach. | Accounting | 🇬🇧 London | 6,800 | 1903 |
| 6 | [Grant Thornton UK](https://www.tamtam.ai/c/grant-thornton-uk) (grantthornton.co.uk)<br>Providing assurance, tax, and advisory services through a global network, combining local insight with flexible, client-focused solutions. | Accounting | 🇬🇧 London | 5,972 | 1904 |
| 7 | [Davies](https://www.tamtam.ai/c/davies) (davies-group.com)<br>Specialist professional services and technology firm providing risk management, business process optimization, and digital transformation solutions to insurance, regulated, and global businesses | Insurance | 🇬🇧 London | 5,693 |  |
| 8 | [RSM UK](https://www.tamtam.ai/c/rsm-uk) (rsmuk.com)<br>Professional services network providing expertise, resources, and client-focused solutions to empower businesses with confidence and deep understanding. | Accounting | 🇬🇧 London | 5,025 | 1988 |
| 9 | [RSM](https://www.tamtam.ai/c/rsm) (rsm.global)<br>Global network providing assurance, tax, and consulting services focused on middle-market businesses with client-centric, insightful, and resource-sharing approach. | Professional Services | 🇬🇧 London | 4,090 | 1964 |
| 10 | [Moore Global](https://www.tamtam.ai/c/moore-global) (moore-global.com)<br>Global accounting and advisory firm with over 37,000 professionals in 114 countries, dedicated to helping clients thrive through expert guidance and support | Accounting | 🇬🇧 London | 3,884 | 1907 |
| 11 | [MHA](https://www.tamtam.ai/c/mha) (mha.co.uk)<br>Offers financial and business strategy services to enterprises and individuals, supporting growth, success, and sustainable wealth creation globally. | Accounting | 🇬🇧 London | 3,439 | 1880 |
| 12 | [Tax Consultant](https://www.tamtam.ai/c/tax-consultant) (wearegalloways.com)<br>A traditional general practice with a specialist tax consulting team supporting accountants, solicitors, and financial advisers in providing high-level services to clients | Accounting | 🇬🇧 Brighton | 3,015 |  |
| 13 | [Sumer](https://www.tamtam.ai/c/sumer) (sumer.co.uk)<br>Championing small to medium UK and Ireland businesses by uniting expert firms to provide collaborative support and growth solutions. | Accounting | 🇬🇧 London | 2,608 |  |
| 14 | [S&W](https://www.tamtam.ai/c/s-and-w) (swgroup.com)<br>Financial and professional services firm specializing in wealth management, accountancy, tax advisory, and investment management solutions. | Professional Services | 🇬🇧 London | 2,218 | 1881 |
| 15 | [Cooper Parry](https://www.tamtam.ai/c/cooper-parry) (linktr.ee)<br>This B Corp provides audit, tax, innovation, tech, outsourcing, deals, wealth, sustainability, legal, and digital services to entrepreneurial businesses. | Financial Services | 🇬🇧 Uk | 1,698 | 1850 |
| 16 | [AAB](https://www.tamtam.ai/c/aab) (aabgroup.com)<br>A tech-enabled group providing business critical services including audit, accounting, tax, HR, payroll, financial planning, wealth management, and organizational consulting | Professional Services | 🇬🇧 Aberdeen | 1,663 | 1990 |
| 17 | [Crowe UK](https://www.tamtam.ai/c/crowe-uk) (crowe.com)<br>Providing audit, tax, advisory, and consulting services with deep market knowledge to businesses, nonprofits, pension funds, and private clients. | Accounting | 🇬🇧 London | 1,518 |  |
| 18 | [Moore Kingston Smith](https://www.tamtam.ai/c/moore-kingston-smith) (mooreks.co.uk)<br>Providing multi-disciplinary advisory, tax, and audit services to diverse clients locally and internationally, fostering positive change and understanding. | Accounting | 🇬🇧 London | 1,358 |  |
| 19 | [Xeinadin](https://www.tamtam.ai/c/xeinadin) (xeinadin.com)<br>Providing expert business advice infused with technology and global expertise, Xeinadin Group empowers companies to reach their strategic objectives efficiently | Accounting | 🇬🇧 London | 1,323 | 2019 |
| 20 | [Saffery](https://www.tamtam.ai/c/saffery) (saffery.com)<br>A partner-led top 20 accountancy firm specializing in corporate finance, entrepreneurs, and international clients, committed to long-term relationships and tailored strategies | Accounting | 🇬🇧 London | 1,322 | 1855 |
| 21 | [TC Group](https://www.tamtam.ai/c/tc-group) (tc-group.com)<br>Innovative firm of accountants and professional advisers offering a full range of services in financial planning, legal, HR, and technology | Accounting | 🇬🇧 Steyning | 1,236 | 1992 |
| 22 | [Interpath](https://www.tamtam.ai/c/interpath) (interpath.com)<br>Providing expertise and creative solutions for critical business decisions, guiding clients towards the right path quickly | Financial Services | 🇬🇧 London | 1,220 |  |
| 23 | [No Comment](https://www.tamtam.ai/c/no-comment) (europa-recht.eu)<br>An independent firm providing comprehensive accounting services to clients in various sectors, including taxation, audit, bookkeeping, and payroll processing with a personalized approach | Accounting | 🇬🇧 London | 1,191 | 1998 |
| 24 | [Menzies LLP](https://www.tamtam.ai/c/menzies-llp) (menzies.co.uk)<br>Leading UK advisory and accountancy firm offering financial, operational, and strategic support to businesses and individuals internationally across various sectors | Accounting | 🇬🇧 London | 1,115 | 1912 |
| 25 | [K3 Advisory Group](https://www.tamtam.ai/c/k3-advisory-group) (k3advisorygroup.com)<br>A UK professional services firm in Greater Manchester offering advisory services to SMEs, including business sales, tax services, and restructuring solutions | Financial Services | 🇬🇧 Bolton | 1,114 |  |
| 26 | [PKF Global](https://www.tamtam.ai/c/pkf-global) (pkf.com)<br>Network of independent firms providing audit, accounting, tax, legal, and business advisory services across 150 countries worldwide. | Accounting | 🇬🇧 London | 877 | 1969 |
| 27 | [Nexia](https://www.tamtam.ai/c/nexia) (nexia.com)<br>Network of independent accounting and consulting firms providing audit, tax, advisory, and business services with global collaboration. | Accounting | 🇬🇧 London | 872 | 1991 |
| 28 | [Johnston Carmichael Chartered Accountants and Business Advisers](https://www.tamtam.ai/c/johnston-carmichael-chartered-accountants-and-business-advisers) (johnstoncarmichael.com)<br>Scotland's largest independent firm of chartered accountants and business advisers, part of the international network Moore Global, offering a wide range of financial services | Accounting | 🇬🇧 Aberdeen | 855 | 1936 |
| 29 | [Looking for new opportunities](https://www.tamtam.ai/c/looking-for-new-opportunities) (springboardaccounting.co.uk)<br>Providing accounting services tailored for sole traders and small to medium-sized enterprises | Accounting | 🇬🇧 Stapleford | 854 | 2020 |
| 30 | [TaxAssist Accountants](https://www.tamtam.ai/c/taxassist-accountants) (taxassist.co.uk)<br>Specializing in providing accountancy services, tax advice, bookkeeping, and payroll for small businesses, with opportunities for individuals to open their own accounting practice | Accounting | 🇬🇧 Norwich | 824 | 1995 |
| 31 | [Baldwins Accountants](https://www.tamtam.ai/c/baldwins-accountants) (baldwinsaccountants.co.uk)<br>The company provides accounting, tax, audit, advisory, and business services digitally and in person to help organizations achieve their ambitions | Accounting | 🇬🇧 Walsall | 770 | 1971 |
| 32 | [PKF-Francis Clark Chartered accountants & business advisers](https://www.tamtam.ai/c/pkf-francis-clark-chartered-accountants-and-business-advisers) (pkf-francisclark.co.uk)<br>A firm of chartered accountants and business advisers in the South West, providing expert advice, support, and a supportive culture | Accounting | 🇬🇧 Exeter | 757 | 1919 |
| 33 | [Blick Rothenberg](https://www.tamtam.ai/c/blick-rothenberg) (blickrothenberg.com)<br>Leading tax, accounting and business advisory firm offering audit, accounting, business advisory, corporate and personal tax services built on integrity and expertise. | Accounting | 🇬🇧 London | 736 | 1945 |
| 34 | [Grant Thornton International Ltd](https://www.tamtam.ai/c/grant-thornton-international-ltd) (grantthornton.global)<br>Global professional services firm providing assurance, tax, and advisory services with a personal, agile, and proactive approach in over 149 countries | Accounting | 🇬🇧 London | 727 |  |
| 35 | [PKF Littlejohn](https://www.tamtam.ai/c/pkf-littlejohn) (pkf-l.com)<br>A fast-growing firm of accountants and business advisers in London, Leeds, and Manchester, offering audit, tax, and advisory services with expertise in capital markets, insurance, international businesses, and charities | Accounting | 🇬🇧 London | 715 |  |
| 36 | [HaysMac](https://www.tamtam.ai/c/haysmac) (haysmac.com)<br>Top 30 chartered accountants and tax advisors providing services to businesses, charities, and organizations, with international reach through MSI Global Alliance | Accounting | 🇬🇧 London | 702 | 2001 |
| 37 | [Hawksford](https://www.tamtam.ai/c/hawksford) (hawksford.com)<br>An international provider of Corporate, Private Client, and Fund services, offering tailored solutions for businesses, entrepreneurs, and high-net-worth individuals worldwide | Financial Services | 🇬🇧 St Helier | 670 | 1963 |
| 38 | [Armstrong Watson](https://www.tamtam.ai/c/armstrong-watson) (armstrongwatson.co.uk)<br>Financial services company providing tailored advice and protection to clients in the North of England and Scotland, offering a range of specialist services and financial advice | Accounting | 🇬🇧 Carlisle | 632 | 1867 |
| 39 | [Kreston Reeves](https://www.tamtam.ai/c/kreston-reeves) (krestonreeves.com)<br>Providing personalized accountancy, business, and wealth advice with a focus on social responsibility, guiding clients and communities towards a brighter future | Accounting | 🇬🇧 London | 614 | 1821 |
| 40 | [UHY Hacker Young](https://www.tamtam.ai/c/uhy-hacker-young) (uhy-uk.com)<br>Award-winning UK chartered accountants with 24 offices across England, Wales, and Northern Ireland providing full service support for commercial and personal financial matters | Accounting | 🇬🇧 London | 611 | 1925 |
| 41 | [KM](https://www.tamtam.ai/c/km-burnley) (kmaccountants.co.uk)<br>A long-standing chartered accountancy firm in Burnley offering advanced accounting technology, personalized services, and business advisory support for greater success | Accounting | 🇬🇧 Burnley | 601 | 1909 |
| 42 | [Buzzacott](https://www.tamtam.ai/c/buzzacott) (buzzacott.co.uk)<br>A top 25 UK accountancy firm based in London, providing tailored expertise for private clients, businesses, and not-for-profit organizations worldwide | Accounting | 🇬🇧 London | 591 | 1919 |
| 43 | [BKL](https://www.tamtam.ai/c/bkl) (bkl.co.uk)<br>BKL is a top firm of chartered accountants and tax advisers, known for expertise in tax matters and building relationships with ambitious clients | Accounting | 🇬🇧 London | 591 | 1980 |
| 44 | [Wilkins Kennedy](https://www.tamtam.ai/c/wilkins-kennedy) (wilkinskennedy.com)<br>An accounting and advisory firm providing a full range of services to businesses and individuals across the UK and abroad Specializing in various market sectors and business divisions | Accounting | 🇬🇧 City of London | 587 | 1882 |
| 45 | [Kreston Global](https://www.tamtam.ai/c/kreston-global) (kreston.com)<br>Accounting firms global network, offering compliance and advisory services, building partnerships based on trust, integrity, and collaboration worldwide. | Accounting | 🇬🇧 London | 570 | 1971 |
| 46 | [DJH](https://www.tamtam.ai/c/djh) (djh.co.uk)<br>An award-winning accountancy and business advisory group offering integrated services including accounts, tax, R&D, corporate finance, and more across multiple offices | Accounting | 🇬🇧 Stoke-on-Trent | 536 | 1997 |
| 47 | [Affinia](https://www.tamtam.ai/c/affinia-colchester) (affinia.co.uk)<br>A UK firm offering chartered accountancy, tax advisory, and business consultancy services, helping clients achieve success through strategic planning and expert guidance | Accounting | 🇬🇧 Colchester | 526 | 1963 |
| 48 | [Hazlewoods](https://www.tamtam.ai/c/hazlewoods) (hazlewoods.co.uk)<br>A top UK business advisor and Chartered Accountant, Hazlewoods offers personalized accounting, tax, audit, and business advice, aiming to support clients at every stage of their journey | Accounting | 🇬🇧 Cheltenham | 517 | 1919 |
| 49 | [Outbooks](https://www.tamtam.ai/c/outbooks) (outbooks.co.uk)<br>Leading provider of outsourcing services to accounting firms, offering bookkeeping, accounting, and tax preparation to over 10,000 clients worldwide, boosting margins through expert teams and smart technology | Outsourcing and Offshoring Consulting | 🇬🇧 Harrow | 496 | 2010 |
| 50 | [Price Bailey](https://www.tamtam.ai/c/price-bailey) (pricebailey.co.uk)<br>Leading firm of accountants and advisers offering consultancy, planning, accounting, tax, and financial services to SMEs, private clients, and national/international businesses in East Anglia and London | Accounting | 🇬🇧 Bishop's Stortford | 473 | 1938 |
| 51 | [Streets](https://www.tamtam.ai/c/streets-509658) (streets.uk)<br>A UK firm offering accounting, tax, and financial advisory services to clients including businesses, professionals, organizations, and high net worth individuals | Accounting | 🇬🇧 Lincoln | 459 | 1907 |
| 52 | [Corient Business Solutions Limited](https://www.tamtam.ai/c/corient-business-solutions-limited) (corientbs.co.uk)<br>Outsourcing Accounting and Bookkeeping Company providing a wide range of services including finance, HR, customer service, and back office services, with a focus on cost reduction and business growth | Accounting | 🇬🇧 Coventry | 457 | 2011 |
| 53 | [BHP, Chartered Accountants](https://www.tamtam.ai/c/bhp-chartered-accountants) (bhp.co.uk)<br>A leading independent firm in the North of England, providing expert full-service offerings in compliance, tax planning, corporate finance, and business advice across various industries | Accounting | 🇬🇧 Sheffield | 452 | 1867 |
| 54 | [PEM](https://www.tamtam.ai/c/pem) (pem.co.uk)<br>PEM is an independent firm of accountants, tax, and business advisers with over 145 years of experience serving clients globally | Accounting | 🇬🇧 Cambridge | 445 | 1875 |
| 55 | [bk plus](https://www.tamtam.ai/c/bk-plus) (bkplus.co.uk)<br>BK Plus supports SMEs, OMBs, and Entrepreneurial businesses with tailored support including funding, growth strategies, and exit plans, led by experienced founders David Baldwin and Shaun Knight | Accounting | 🇬🇧 Aldridge | 438 | 2021 |
| 56 | [Old Mill](https://www.tamtam.ai/c/old-mill) (om.uk)<br>A group of financial experts specializing in digital accounting, financial planning, and tax advisory for individuals and businesses in the South West region | Accounting | 🇬🇧 Yeovil | 434 |  |
| 57 | [Mazars in the UK](https://www.tamtam.ai/c/mazars-in-the-uk) (mazars.co.uk)<br>Professional services firm undergoing rebranding, updating LinkedIn presence to Forvis Mazars in the UK, focusing on client communication. | Accounting | 🇬🇧 London | 429 |  |
| 58 | [Duncan & Toplis](https://www.tamtam.ai/c/duncan-and-toplis) (duncantoplis.co.uk)<br>A leading independent accounting and business advisory firm in the East Midlands offering a comprehensive range of services to clients | Accounting | 🇬🇧 Grantham | 426 | 1925 |
| 59 | [Dains Accountants & Advisers](https://www.tamtam.ai/c/dains-accountants-and-advisers) (dains.com)<br>A team of specialists in the Midlands helping individuals and businesses achieve future success through personalized and passionate service | Accounting | 🇬🇧 Birmingham | 399 | 1926 |
| 60 | [Gravita](https://www.tamtam.ai/c/gravita) (gravita.com)<br>Gravita provides innovative accounting solutions to assist fast-growing SMEs, listed companies, international businesses, and individuals with planning, growth, and financial services | Accounting | 🇬🇧 London | 396 |  |
| 61 | [mgr](https://www.tamtam.ai/c/mgr) (mgr.co.uk)<br>London-based accountancy business providing exceptional accounting, tax, and business advisory services to corporates, entrepreneurs, creatives, and private clients Member of ETL GLOBAL network | Accounting | 🇬🇧 London | 394 | 2013 |
| 62 | [Rawlinson & Hunter LLP](https://www.tamtam.ai/c/rawlinson-and-hunter-llp) (rawlinson-hunter.co.uk)<br>Provision of taxation advisory, compliance, accountancy, and assurance services to individuals, families, entrepreneurs, and businesses globally. | Accounting | 🇬🇧 London | 387 | 1933 |
| 63 | [Shaw Gibbs](https://www.tamtam.ai/c/shaw-gibbs) (shawgibbs.com)<br>A UK accountancy practice in Central and Southern England providing expert solutions for businesses and individuals, focusing on client value and utilizing cutting-edge technology | Accounting | 🇬🇧 Oxford | 369 |  |
| 64 | [HLB International](https://www.tamtam.ai/c/hlb-international) (hlb.global)<br>Global network of independent advisory and accounting firms, offering innovative services to help clients grow internationally Operating in 157 countries with over 47,000 partners | Professional Services | 🇬🇧 London | 360 | 1969 |
| 65 | [Larking Gowen](https://www.tamtam.ai/c/larking-gowen) (larking-gowen.co.uk)<br>Specialist accountancy firm offering corporate finance, personal tax, legal advice, business strategy, support, and recovery services across multiple regions. | Accounting | 🇬🇧 Norwich | 353 | 1888 |
| 66 | [PayStream](https://www.tamtam.ai/c/paystream) (paystream.co.uk)<br>PayStream provides payroll, umbrella, tax, software, and accountancy services for recruitment agencies, contractors, and businesses with a focus on compliance and tailored solutions | Financial Services | 🇬🇧 Altrincham | 353 | 2000 |
| 67 | [Haines Watts](https://www.tamtam.ai/c/haines-watts) (hwca.com)<br>A top chartered accountancy firm specializing in advising and supporting owner-managed businesses, offering commercial, supportive, challenging, practical, and approachable services | Accounting | 🇬🇧 Swindon | 352 | 1930 |
| 68 | [SKS Business Services](https://www.tamtam.ai/c/sks-business-services) (raa-uk.com)<br>SKS offers tailored financial services to businesses of all sizes, specializing in finance function outsourcing to help clients build and preserve wealth effectively | Accounting | 🇬🇧 London | 348 | 2008 |
| 69 | [HW Fisher, part of the Sumer Group](https://www.tamtam.ai/c/hw-fisher-part-of-the-sumer-group) (hwfisher.co.uk)<br>provides expert accountancy, tax, audit, corporate and financial advisory services to SMEs, corporates, charities, and high net-worth individuals | Accounting | 🇬🇧 London | 348 | 1933 |
| 70 | [MIAA](https://www.tamtam.ai/c/miaa) (nhs.uk)<br>Provider of assurance and solutions services to public and third sector clients, helping improve services and deliver value to communities | Accounting | 🇬🇧 Liverpool | 316 | 1990 |
| 71 | [Albert Goodman](https://www.tamtam.ai/c/albert-goodman) (linktr.ee)<br>The company offers excellent service with a positive experience, guiding clients through managing accounts, navigating change, and seizing new opportunities | Accounting | 🇬🇧 Taunton | 313 | 1866 |
| 72 | [DFK International](https://www.tamtam.ai/c/dfk-international) (dfk.com)<br>A Top 10 international association of independent accounting firms and business advisers, emphasizing client understanding, personal service, and ethical standards | Accounting | 🇬🇧 London | 298 | 1962 |
| 73 | [Russell Bedford International](https://www.tamtam.ai/c/russell-bedford-international) (russellbedford.com)<br>A global network of independent firms providing accounting, auditing, tax advice, and business consulting services to clients worldwide since 1983 | Accounting | 🇬🇧 London | 298 | 1983 |
| 74 | [Quantuma](https://www.tamtam.ai/c/quantuma) (quantuma.com)<br>A leading business advisory firm offering expert advice on transactions, dispute resolution, financial challenges, and a range of professional services globally | Financial Services | 🇬🇧 London | 277 |  |
| 75 | [Brookson (A People2.0 Company)](https://www.tamtam.ai/c/brookson-a-people2-0-company) (brookson.co.uk)<br>With over 20 years of experience, the company revolutionizes professional services for the changing world of work by providing innovative solutions | Financial Services | 🇬🇧 Warrington | 270 | 1995 |
| 76 | [PKF Smith Cooper](https://www.tamtam.ai/c/pkf-smith-cooper) (pkfsmithcooper.com)<br>A leading firm of accountants and business advisors in the Midlands, offering a range of audit, accountancy, tax, and advisory services globally | Accounting | 🇬🇧 Derby | 266 | 1985 |
| 77 | [UNW](https://www.tamtam.ai/c/unw) (unw.co.uk)<br>A leading firm of chartered accountants providing a wide range of accountancy and advisory services, with a strong focus on exceptional people and client care | Accounting | 🇬🇧 Newcastle upon Tyne | 253 |  |
| 78 | [SRLV](https://www.tamtam.ai/c/srlv) (srlv.co.uk)<br>A mid-tier firm offering diverse services in business management, accounting, and advisory Specializing in creative, corporate, owner-managed businesses, and private client services worldwide | Accounting | 🇬🇧 Fitzrovia | 237 | 1988 |
| 79 | [KBM Chartered Certified Accountants & Registered Auditors](https://www.tamtam.ai/c/kbm-chartered-certified-accountants-and-registered-auditors) (kbmuk.co.uk)<br>An independent firm of Chartered Accountants offering accounting services, audits, and financial planning to companies across the UK | Accounting | 🇬🇧 London | 237 | 1987 |
| 80 | [Campbell Dallas](https://www.tamtam.ai/c/campbell-dallas) (campbelldallas.co.uk)<br>Providing comprehensive accounting, tax, audit, advisory, and business services both digitally and in person to help organizations achieve their ambitions #AzetsBRANDNewDay | Accounting | 🇬🇧 | 236 | 1999 |
| 81 | [UHY International](https://www.tamtam.ai/c/uhy-international) (uhy.com)<br>A leading network of independent audit, accounting, tax, and consulting firms with offices in 100 countries, part of the 20th largest international accounting network | Accounting | 🇬🇧 London | 232 | 1986 |
| 82 | [Sable International](https://www.tamtam.ai/c/sable-international) (sableinternational.com)<br>A group of companies specializing in financial and immigration services for global citizens, offering tailored expertise and personalized service by experienced professionals | Financial Services | 🇬🇧 London | 217 | 1995 |
| 83 | [HSJ Accountants, Business & Tax Advisors](https://www.tamtam.ai/c/hsj-accountants-business-and-tax-advisors) (hsjaccountants.co.uk)<br>The company offers accounting, tax, payroll, audit, compliance services, cloud conversion packages, software provision, training, and outsource solutions to help clients achieve their goals | Accounting | 🇬🇧 Newport | 216 | 2000 |
| 84 | [Sedulo](https://www.tamtam.ai/c/sedulo) (sedulo.co.uk)<br>A rapidly expanding UK business advisory firm offering expert financial and business services to corporate entities, SMEs, nonprofits, and private clients | Financial Services | 🇬🇧 Manchester | 209 | 2009 |
| 85 | [MGI Worldwide](https://www.tamtam.ai/c/mgi-worldwide) (mgiworld.com)<br>Global network of independent audit, tax, and accounting firms with almost 9,000 professionals in 400 locations, providing personalized services to small and medium-sized businesses worldwide | Accounting | 🇬🇧 London | 207 | 1947 |
| 86 | [Henderson Loggie](https://www.tamtam.ai/c/henderson-loggie) (hlca.co.uk)<br>Leading Chartered Accountants and Business Advisors in Scotland, providing a wide range of services including audit, tax, business advice, and financial services with a focus on delivering practical solutions | Accounting | 🇬🇧 Dundee | 205 | 1909 |
| 87 | [Sopher + Co](https://www.tamtam.ai/c/sopher-co) (sopherco.com)<br>Entrepreneurial accounting firm in London providing personalized services, expertise in tax, corporate finance, and business growth for individuals and businesses | Accounting | 🇬🇧 London | 204 | 1975 |
| 88 | [Mitchell Charlesworth](https://www.tamtam.ai/c/mitchell-charlesworth) (mitchellcharlesworth.co.uk)<br>A North West firm of accountants providing solutions to businesses with partner-led services, catering to a diverse range of clients | Accounting | 🇬🇧 Liverpool | 203 | 1885 |
| 89 | [Lovewell Blake](https://www.tamtam.ai/c/lovewell-blake) (lovewell-blake.co.uk)<br>A leading firm of Chartered Accountants and Financial Planners in East Anglia, providing innovative services and expert advice for client growth and development | Accounting | 🇬🇧 East Anglia | 199 | 1858 |
| 90 | [EQ Accountants, part of the Sumer Group](https://www.tamtam.ai/c/eq-accountants-part-of-the-sumer-group) (eqaccountants.co.uk)<br>A modern and energetic accounting practice in Scotland with over 210 staff offering business, finance, and taxation services, specializing in various industries | Accounting | 🇬🇧 Dundee | 198 | 2004 |
| 91 | [Crunch](https://www.tamtam.ai/c/crunch) (crunch.co.uk)<br>Accounting software and professional services designed to support and simplify financial management for small UK businesses and self-employed individuals. | Financial Services | 🇬🇧 Hove | 195 | 2009 |
| 92 | [Grant Thornton (NI) LLP](https://www.tamtam.ai/c/grant-thornton-ni-llp) (grantthorntonni.com)<br>A growing professional services firm offering innovative solutions to business challenges with a focus on long-term relationships and core values | Professional Services | 🇬🇧 Belfast | 190 | 1899 |
| 93 | [Galloways Accounting](https://www.tamtam.ai/c/galloways-accounting) (wearegalloways.com)<br>A rapidly growing accounting firm in Sussex providing comprehensive services to businesses and individuals, prioritizing clients and their needs | Accounting | 🇬🇧 Brighton | 189 |  |
| 94 | [EST](https://www.tamtam.ai/c/est) (est-group.co.uk)<br>A multi-service professional practice providing HR consultancy, accountancy, tax advice, and commercial finance solutions to businesses | Business Consulting and Services | 🇬🇧 Groesfaen | 189 | 2013 |
| 95 | [Lubbock Fine](https://www.tamtam.ai/c/lubbock-fine) (lubbockfine.co.uk)<br>An independent accounting, tax, audit, and business advisory firm in the heart of London, helping clients achieve financial success through innovative solutions and exceptional service | Accounting | 🇬🇧 London | 186 | 1929 |
| 96 | [Wbg](https://www.tamtam.ai/c/wbg) (wbg.co.uk)<br>A leading Scottish firm providing accounting, business, and tax advisory services to clients across the UK Specializing in various sectors Mission is client success and growth | Accounting | 🇬🇧 Glasgow | 183 |  |
| 97 | [EY Private Client Services](https://www.tamtam.ai/c/ey-private-client-services) (ey.com)<br>Specializing in private client services, the company provides expert tax advice and support for individuals, families, and businesses with US/UK cross-border needs | Accounting | 🇬🇧 London | 166 | 2021 |
| 98 | [MHA Moore and Smalley](https://www.tamtam.ai/c/mha-moore-and-smalley) (mooreandsmalley.co.uk)<br>A trusted firm offering outstanding client service, continuous improvement, and global resources to support businesses' domestic and international growth | Accounting | 🇬🇧 North West England | 149 | 1892 |
| 99 | [Opus Business Advisory Group](https://www.tamtam.ai/c/opus-business-advisory-group) (opusllp.com)<br>A diverse group of practices specializing in business advisory, restructuring, M&A, forensic accounting, equity investment, business rescue plans, and turnaround services | Financial Services | 🇬🇧 London | 147 | 2013 |
| 100 | [AGN International](https://www.tamtam.ai/c/agn-international) (agn.org)<br>A global association of independent accounting firms offering assurance, tax, and advisory services, with a focus on high standards and client service | Accounting | 🇬🇧 London | 146 | 1996 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

## More company lists in the United Kingdom

- [The largest companies in the United Kingdom](https://www.tamtam.ai/l/largest-companies-united-kingdom) (36,547)
- [Multinational companies in the United Kingdom](https://www.tamtam.ai/l/multinational-companies-united-kingdom) (7,458)
- [Financial services firms in the United Kingdom](https://www.tamtam.ai/l/financial-services-firms-united-kingdom) (3,711)
- [Financial Services companies in the United Kingdom](https://www.tamtam.ai/l/financial-services-companies-united-kingdom) (3,696)
- [Retail chains in the United Kingdom](https://www.tamtam.ai/l/retail-chains-united-kingdom) (3,289)
- [Professional services firms in the United Kingdom](https://www.tamtam.ai/l/professional-services-firms-united-kingdom) (2,706)
- [Software Development companies in the United Kingdom](https://www.tamtam.ai/l/software-development-companies-united-kingdom) (2,600)
- [Manufacturers in the United Kingdom](https://www.tamtam.ai/l/manufacturers-united-kingdom) (2,159)
- [Companies with in-house R&D in the United Kingdom](https://www.tamtam.ai/l/r-and-d-companies-united-kingdom) (1,930)
- [IT Services and IT Consulting companies in the United Kingdom](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-united-kingdom) (1,722)
- [Retail companies in the United Kingdom](https://www.tamtam.ai/l/retail-companies-united-kingdom) (1,596)
- [IT services companies in the United Kingdom](https://www.tamtam.ai/l/it-services-companies-united-kingdom) (1,583)
- [Hotel and hospitality groups in the United Kingdom](https://www.tamtam.ai/l/hospitality-groups-united-kingdom) (1,461)
- [Companies with a mobile app in the United Kingdom](https://www.tamtam.ai/l/companies-with-mobile-app-united-kingdom) (1,411)
- [Consulting firms in the United Kingdom](https://www.tamtam.ai/l/consulting-firms-united-kingdom) (1,298)
- [E-commerce companies in the United Kingdom](https://www.tamtam.ai/l/ecommerce-companies-united-kingdom) (1,246)
- [Hardware manufacturers in the United Kingdom](https://www.tamtam.ai/l/hardware-companies-united-kingdom) (1,239)
- [Family-owned companies in the United Kingdom](https://www.tamtam.ai/l/family-owned-companies-united-kingdom) (1,224)
- [Hospitality companies in the United Kingdom](https://www.tamtam.ai/l/hospitality-companies-united-kingdom) (1,204)
- [Critical infrastructure operators in the United Kingdom](https://www.tamtam.ai/l/critical-infrastructure-operators-united-kingdom) (1,195)
- [Wellness and Fitness Services companies in the United Kingdom](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-united-kingdom) (1,151)
- [Retail Apparel and Fashion companies in the United Kingdom](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-united-kingdom) (1,085)
- [Subscription businesses in the United Kingdom](https://www.tamtam.ai/l/subscription-businesses-united-kingdom) (1,077)
- [Distributors and wholesalers in the United Kingdom](https://www.tamtam.ai/l/distributors-and-wholesalers-united-kingdom) (1,060)

## The same list elsewhere in United Kingdom

- [Accounting firms in England](https://www.tamtam.ai/l/accounting-firms-england) (320)
- [Accounting firms in London](https://www.tamtam.ai/l/accounting-firms-london) (105)

## The same list elsewhere

- [Accounting firms in the world](https://www.tamtam.ai/l/accounting-firms-in-the-world) (3,737)
- [Accounting firms in Europe](https://www.tamtam.ai/l/accounting-firms-in-europe) (2,855)

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Source: https://www.tamtam.ai/l/accounting-firms-united-kingdom