The 100 largest Accounting companies in the United Kingdom (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	PwC UK pwc.co.uk Professional services firm focusing on building trust in society and solving important problems through partnership and commercial expertise.	Accounting	🇬🇧 London	10,873	n/a
2	ACCA accaglobal.com A global body for professional accountants, providing qualifications and support while promoting ethics, governance, and public interest in the profession	Accounting	🇬🇧 London	8,556	1904
3	Azets azets.com A leading professional services firm in Northern Europe, providing advisory, accounting, audit, HR, recruitment, outsourcing, and technology solutions to clients	Accounting	🇬🇧 London	7,523	n/a
4	BDO UK bdo.co.uk Provides tax, audit, assurance, accounting, business advisory, and outsourcing services to diverse sectors with a client-focused, innovative approach.	Accounting	🇬🇧 London	6,800	1903
5	Grant Thornton UK grantthornton.co.uk Providing assurance, tax, and advisory services through a global network, combining local insight with flexible, client-focused solutions.	Accounting	🇬🇧 London	5,972	1904
6	RSM UK rsmuk.com Professional services network providing expertise, resources, and client-focused solutions to empower businesses with confidence and deep understanding.	Accounting	🇬🇧 London	5,025	1988
7	Moore Global moore-global.com 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
8	MHA mha.co.uk Offers financial and business strategy services to enterprises and individuals, supporting growth, success, and sustainable wealth creation globally.	Accounting	🇬🇧 London	3,439	1880
9	Tax Consultant wearegalloways.com 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	n/a
10	Sumer sumer.co.uk Championing small to medium UK and Ireland businesses by uniting expert firms to provide collaborative support and growth solutions.	Accounting	🇬🇧 London	2,608	n/a
11	Crowe UK crowe.com Providing audit, tax, advisory, and consulting services with deep market knowledge to businesses, nonprofits, pension funds, and private clients.	Accounting	🇬🇧 London	1,518	n/a
12	CIMA aicpa-cima.com Empowering highly skilled accountants to meet current demands and future challenges, driving a dynamic profession focused on trust, opportunity, and prosperity worldwide	Accounting	🇬🇧 London	1,512	1919
13	ICAEW icaew.com Trains, develops, and supports chartered accountants worldwide, sharing knowledge with governments and regulators to foster sustainable, accountable, and fair economies.	Accounting	🇬🇧 London	1,419	1880
14	Moore Kingston Smith mooreks.co.uk Providing multi-disciplinary advisory, tax, and audit services to diverse clients locally and internationally, fostering positive change and understanding.	Accounting	🇬🇧 London	1,358	n/a
15	Xeinadin xeinadin.com 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
16	Saffery saffery.com 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
17	AAT aat.org.uk Leading UK qualification & membership body for accounting staff, awarding 90% of accounting vocational qualifications, with 130,000+ global members Offering support, training, and networking opportunities worldwide	Accounting	🇬🇧 London	1,254	1980
18	TC Group tc-group.com 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
19	No Comment europa-recht.eu 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
20	Menzies LLP menzies.co.uk 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
21	PKF Global pkf.com Network of independent firms providing audit, accounting, tax, legal, and business advisory services across 150 countries worldwide.	Accounting	🇬🇧 London	877	1969
22	Nexia nexia.com Network of independent accounting and consulting firms providing audit, tax, advisory, and business services with global collaboration.	Accounting	🇬🇧 London	872	1991
23	Johnston Carmichael Chartered Accountants and Business Advisers johnstoncarmichael.com 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
24	Looking for new opportunities springboardaccounting.co.uk Providing accounting services tailored for sole traders and small to medium-sized enterprises	Accounting	🇬🇧 Stapleford	854	2020
25	Accountant Office media7.net A professional firm specializing in accounting services for businesses and individuals, providing expertise in financial management, tax preparation, and consulting	Accounting	🇬🇧 London	842	n/a
26	TaxAssist Accountants taxassist.co.uk 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
27	Baldwins Accountants baldwinsaccountants.co.uk The company provides accounting, tax, audit, advisory, and business services digitally and in person to help organizations achieve their ambitions	Accounting	🇬🇧 Walsall	770	1971
28	PKF-Francis Clark Chartered accountants & business advisers pkf-francisclark.co.uk A firm of chartered accountants and business advisers in the South West, providing expert advice, support, and a supportive culture	Accounting	🇬🇧 Exeter	757	1919
29	Blick Rothenberg blickrothenberg.com 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
30	Grant Thornton International Ltd grantthornton.global Global professional services firm providing assurance, tax, and advisory services with a personal, agile, and proactive approach in over 149 countries	Accounting	🇬🇧 London	727	n/a
31	PKF Littlejohn pkf-l.com 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	n/a
32	HaysMac haysmac.com 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
33	Armstrong Watson armstrongwatson.co.uk 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
34	Kreston Reeves krestonreeves.com 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
35	UHY Hacker Young uhy-uk.com 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
36	KM kmaccountants.co.uk 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
37	IFRS Foundation ifrs.org An independent organization overseeing standard-setting bodies for accounting and sustainability, ensuring the development and promulgation of global standards for financial reporting	Accounting	🇬🇧 London	592	2001
38	Buzzacott buzzacott.co.uk 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
39	BKL bkl.co.uk 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
40	Big 4 Consultancy Firm transformlearningacademy.com A platform for contractors and consultants to connect without disclosing client relationships	Accounting	🇬🇧 Liverpool	587	n/a
41	Wilkins Kennedy wilkinskennedy.com 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
42	Kreston Global kreston.com Accounting firms global network, offering compliance and advisory services, building partnerships based on trust, integrity, and collaboration worldwide.	Accounting	🇬🇧 London	570	1971
43	Accountant Now accountantnow.co.uk Innovative technology platform connecting business owners with suitable accountants, providing choice and saving time for both parties in the process	Accounting	🇬🇧 York	559	2010
44	DJH djh.co.uk 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
45	Affinia affinia.co.uk 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
46	ICAS - The Professional Body of CAs linktr.ee Professional body for Chartered Accountants, providing education, regulation, examination, and support to members, fostering ethical leadership and trust in business.	Accounting	🇬🇧 Edinburgh	520	1854
47	Hazlewoods hazlewoods.co.uk 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
48	Dahabshiil Group of Companies dahabshiil.com A leading African money transfer business with global presence, offering online and in-person services rooted in trust, reliability, and customer satisfaction	Accounting	🇬🇧 London	501	1940
49	Financial Reporting Council frc.org.uk Support UK economic growth by upholding high standards in corporate governance, reporting, auditing, actuarial work, and regulatory oversight.	Accounting	🇬🇧 London	483	n/a
50	Price Bailey pricebailey.co.uk 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	Future Connect Training & Recruitment Ltd fctraining.org Leading provider of practical, hands-on accountancy training for corporate and individuals Specializing in making candidates job-ready for the accounting industry with flexible schedules and individual attention	Accounting	🇬🇧 Finchley Central	466	2014
52	Streets streets.uk 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
53	Corient Business Solutions Limited corientbs.co.uk 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
54	BHP, Chartered Accountants bhp.co.uk 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
55	PEM pem.co.uk PEM is an independent firm of accountants, tax, and business advisers with over 145 years of experience serving clients globally	Accounting	🇬🇧 Cambridge	445	1875
56	bk plus bkplus.co.uk 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
57	Old Mill om.uk 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	n/a
58	Mazars in the UK mazars.co.uk Professional services firm undergoing rebranding, updating LinkedIn presence to Forvis Mazars in the UK, focusing on client communication.	Accounting	🇬🇧 London	429	n/a
59	Duncan & Toplis duncantoplis.co.uk A leading independent accounting and business advisory firm in the East Midlands offering a comprehensive range of services to clients	Accounting	🇬🇧 Grantham	426	1925
60	Financeplus (part of WPP)wpp.com FinancePlus provides financial shared services including accounts payable, receivable, treasury, and reporting to WPP companies globally for increased efficiency and effectiveness	Accounting	🇬🇧 London	416	2012
61	Dains Accountants & Advisers dains.com A team of specialists in the Midlands helping individuals and businesses achieve future success through personalized and passionate service	Accounting	🇬🇧 Birmingham	399	1926
62	Gravita gravita.com 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	n/a
63	mgr mgr.co.uk 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
64	Rawlinson & Hunter LLP rawlinson-hunter.co.uk Provision of taxation advisory, compliance, accountancy, and assurance services to individuals, families, entrepreneurs, and businesses globally.	Accounting	🇬🇧 London	387	1933
65	KBM Training & Recruitment kbmtr.co.uk Specialized in practical accountancy training, offering one-to-one sessions using real client files and various accounting software, preparing learners for various job roles in the industry	Accounting	🇬🇧 London	380	2004
66	SJC sjca.co.uk Providing personalized services for businesses and individuals to address their specific needs and help them achieve their financial goals	Accounting	🇬🇧 Exeter	379	n/a
67	Shaw Gibbs shawgibbs.com 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	n/a
68	CIPFA cipfa.org Professional body for public finance professionals with 14,000 members working in public services, audit agencies, accountancy firms, and other public money management bodies	Accounting	🇬🇧 London	360	1885
69	Larking Gowen larking-gowen.co.uk Specialist accountancy firm offering corporate finance, personal tax, legal advice, business strategy, support, and recovery services across multiple regions.	Accounting	🇬🇧 Norwich	353	1888
70	Haines Watts hwca.com 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
71	SKS Business Services raa-uk.com 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
72	HW Fisher, part of the Sumer Group hwfisher.co.uk provides expert accountancy, tax, audit, corporate and financial advisory services to SMEs, corporates, charities, and high net-worth individuals	Accounting	🇬🇧 London	348	1933
73	MIAA nhs.uk Provider of assurance and solutions services to public and third sector clients, helping improve services and deliver value to communities	Accounting	🇬🇧 Liverpool	316	1990
74	Albert Goodman linktr.ee The company offers excellent service with a positive experience, guiding clients through managing accounts, navigating change, and seizing new opportunities	Accounting	🇬🇧 Taunton	313	1866
75	DFK International dfk.com A Top 10 international association of independent accounting firms and business advisers, emphasizing client understanding, personal service, and ethical standards	Accounting	🇬🇧 London	298	1962
76	Russell Bedford International russellbedford.com A global network of independent firms providing accounting, auditing, tax advice, and business consulting services to clients worldwide since 1983	Accounting	🇬🇧 London	298	1983
77	PKF Smith Cooper pkfsmithcooper.com 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
78	UNW unw.co.uk 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	n/a
79	SRLV srlv.co.uk 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
80	KBM Chartered Certified Accountants & Registered Auditors kbmuk.co.uk An independent firm of Chartered Accountants offering accounting services, audits, and financial planning to companies across the UK	Accounting	🇬🇧 London	237	1987
81	Campbell Dallas campbelldallas.co.uk Providing comprehensive accounting, tax, audit, advisory, and business services both digitally and in person to help organizations achieve their ambitions #AzetsBRANDNewDay	Accounting	🇬🇧	236	1999
82	UHY International uhy.com 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
83	HSJ Accountants, Business & Tax Advisors hsjaccountants.co.uk 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	MGI Worldwide mgiworld.com 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
85	Henderson Loggie hlca.co.uk 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
86	Sopher + Co sopherco.com Entrepreneurial accounting firm in London providing personalized services, expertise in tax, corporate finance, and business growth for individuals and businesses	Accounting	🇬🇧 London	204	1975
87	Mitchell Charlesworth mitchellcharlesworth.co.uk 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
88	Lovewell Blake lovewell-blake.co.uk 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
89	EQ Accountants, part of the Sumer Group eqaccountants.co.uk 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
90	Galloways Accounting wearegalloways.com A rapidly growing accounting firm in Sussex providing comprehensive services to businesses and individuals, prioritizing clients and their needs	Accounting	🇬🇧 Brighton	189	n/a
91	Lubbock Fine lubbockfine.co.uk 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
92	Wbg wbg.co.uk 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	n/a
93	Mercia Group linktr.ee A leading provider of training and support services for the accountancy profession in the UK, offering high-quality professional training and support products for over 30 years	Accounting	🇬🇧 Leicester	179	1982
94	RRL Chartered Accountants and Chartered Tax Advisers linktr.ee RRL is a team of expert accountants and tax advisers dedicated to helping local businesses in Cornwall thrive through personalized and valuable services	Accounting	🇬🇧 Truro	179	n/a
95	PM+M pmm.co.uk A leading firm of accountants, advisers, and financial planners with over 100 years of experience offering services in audit, accounting, tax, financial planning, and more	Accounting	🇬🇧 Blackburn	177	1919
96	Scott-Moncrieff scott-moncrieff.com A leading independent firm of chartered accountants and business advisers in Scotland, offering expertise in financial assurance, risk management, taxation, and wealth management	Accounting	🇬🇧	171	1792
97	Scrutton Bland, part of the Sumer Group scruttonbland.co.uk Providing accountancy, audit, corporate finance, and tax advice with a focus on long-term client relationships and bespoke services.	Accounting	🇬🇧 Ipswich	167	1919
98	Part-Time Accountants part-timeaccountants.co.uk Specializing in part-time recruitment solutions for finance professionals, offering interim directors, controllers, managers, advisors, and back-office services for growth-oriented companies in the UK and overseas	Accounting	🇬🇧 London	167	2010
99	Shipleys LLP shipleys.com Professional accountants and business advisors offering personalized, clear, and practical solutions for clients in London, Surrey, and globally through AGN International	Accounting	🇬🇧 London	167	1936
100	Dixon Wilson dixonwilson.com Specialists in tax, accountancy, and advisory services for high net worth individuals, families, trusts, and businesses with international reach.	Accounting	🇬🇧 London	167	1888

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 Oct 9, 2026.

More company lists in the United Kingdom

The same list elsewhere in United Kingdom

Accounting companies in London 95