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The 100 largest financial services firms in the United Kingdom

Tamtam tracks 3,375 financial services firms headquartered in the United Kingdom. This list ranks the 100 largest by number of employees on LinkedIn, led by HSBC, Aon and Barclays. Their median headcount is 3,987. Half of them were founded in 1974 or later. The most common headquarters are London (63), Edinburgh (4) and Glasgow (2).

πŸ‡¬πŸ‡§ United Kingdom100 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
HSBChsbc.com

A global financial services organization with a network spanning 63 countries, serving individuals, companies, and governments, creating opportunities for customers worldwide

Financial Services πŸ‡¬πŸ‡§ London 197,879 n/a
2
Aonaon.com

The company provides advice and solutions to clients worldwide, helping them make better decisions to protect and grow their business

Financial Services πŸ‡¬πŸ‡§ London 93,574 n/a
3
Barclayshome.barclays

A British universal bank with global presence, offering consumer banking, payments, corporate and investment banking services, supported by technology and operational solutions

Financial Services πŸ‡¬πŸ‡§ London 82,417 n/a
4
Standard Charteredsc.com

An international banking group with a presence in 53 markets, driving commerce and prosperity through diversity and values Listed on London and Hong Kong Stock Exchanges

Banking πŸ‡¬πŸ‡§ London 79,401 n/a
5
Sainsbury'ssainsburys.jobs

A leading UK retailer with over 1400 stores and a strong digital presence, offering affordable, greener products and convenient financial services to customers

Retail πŸ‡¬πŸ‡§ London 68,549 1869
6
Lloyds Banking Grouplloydsbankinggroup.com

This company focuses on creating a more sustainable and inclusive future in the financial services industry, while supporting customers' changing needs

Financial Services πŸ‡¬πŸ‡§ London 57,702 n/a
7
WTWwtwco.com

Offering data-driven solutions in people, risk, and capital areas, leveraging global expertise to enhance strategy, resilience, workforce motivation, and performance

Financial Services πŸ‡¬πŸ‡§ London 55,656 n/a
8
NatWest Groupnatwestgroup.com

Support UK businesses by removing barriers, promoting learning, enhancing financial confidence, and championing climate solutions for sustainable community growth.

Banking πŸ‡¬πŸ‡§ Edinburgh 43,833 n/a
9
John Lewis Partnershipjlpjobs.com

Employee-owned business operating department stores and supermarkets focused on quality service, retail innovation, and shared responsibility among partners for collective success and growth.

Retail πŸ‡¬πŸ‡§ London 36,517 n/a
10
Avivaaviva.com

This company prioritizes their people, striving to create an inclusive workplace with market-leading benefits for employees and a strong connection to customers and communities

Insurance πŸ‡¬πŸ‡§ London 36,000 1696
11
LSEGlseg.com

Provides financial indexing, benchmarking, analytic services, technology solutions, and integrated market infrastructure across data, capital markets, and post-trade.

Financial Services πŸ‡¬πŸ‡§ London 25,298 n/a
12
Co-opcoop.co.uk

A large consumer co-operative in the UK, offering a variety of services including food retail, funeral services, insurance, and legal services

Retail πŸ‡¬πŸ‡§ Manchester 21,184 n/a
13
Santander UKsantander.co.uk

Providing personal and commercial financial products and services to millions of customers, fostering diversity and a positive workplace culture.

Banking πŸ‡¬πŸ‡§ London 21,000 n/a
14
Bupa UKbupa.co.uk

International healthcare company dedicated to helping people live longer, healthier, happier lives by providing quality healthcare services to over 38 million customers worldwide

Hospitals and Health Care πŸ‡¬πŸ‡§ London 20,537 1947
15
Revolutrevolut.com

A fintech company on a mission to provide customers with more visibility, control, and freedom over their money through innovative products

Financial Services πŸ‡¬πŸ‡§ London 18,462 2015
16
RBSnatwestgroup.com

Announcement of rebranding from RBS to NatWest Group, encouraging followers to transition to the new company page for updates.

Banking πŸ‡¬πŸ‡§ Gogarburn 18,457 n/a
17
Post Office Ltdpostoffice.co.uk

operates largest UK retail network with 11,500 branches and a major digital presence, focusing on customer service and innovation

Retail πŸ‡¬πŸ‡§ London 17,058 n/a
18
Howdenhowdengroupholdings.com

Employee-owned insurance group specializing in broking, reinsurance, underwriting, risk consultancy, and employee benefits with global expertise.

Insurance πŸ‡¬πŸ‡§ London 15,000 1994
19
Nationwide Building Societynationwide.co.uk

Providing reliable and customer-focused banking services, offering financial products and support to meet everyday banking needs effectively.

Financial Services πŸ‡¬πŸ‡§ Swindon 14,486 1846
20
Bank of Communications Co., Ltd. London Branchbankcomm.com.hk

Provides commercial banking, securities, trust services, financial leasing, fund management, and insurance through a vast network of domestic branches and international overseas institutions.

Banking πŸ‡¬πŸ‡§ 12,670 1908
21
Wisewise.com

Platform enabling individuals and businesses to hold multiple currencies, transfer money internationally, and spend abroad with low fees.

Financial Services πŸ‡¬πŸ‡§ London 11,769 2011
22
Admiral Group Plcadmiralgroup.co.uk

Leading car insurance provider in the UK and 7 other countries, focusing on innovation, customer service, and employee satisfaction.

Financial Services πŸ‡¬πŸ‡§ Cardiff 11,047 1993
23
AXA XLaxaxl.com

Specializing in solving complex risks, this division provides innovative insurance solutions for mid-sized companies, multinational corporations, and individuals

Insurance πŸ‡¬πŸ‡§ Hamilton 10,917 n/a
24
Barclays UKsearch.jobs.barclays

A company focused on helping individuals progress in their lives through financial services, digital innovation, career guidance, and customer-centric approach

Banking πŸ‡¬πŸ‡§ London 9,925 1690
25
Fidelity Internationalfidelityinternational.com

Offers global investment solutions, services, and retirement expertise to diverse clients, managing substantial assets for long-term financial futures.

Financial Services πŸ‡¬πŸ‡§ London 9,884 1969
26
Investecinvestec.com

Provides global banking and asset management services, creating and managing wealth through specialized financial solutions and insights for diverse international clients.

Financial Services πŸ‡¬πŸ‡§ London 9,732 1974
27
Apex Group Ltd (UK & Ireland)apexgroup.com

A global financial services provider with offices in over 50 countries, offering a wide range of services to asset managers, capital markets, and family offices

Financial Services πŸ‡¬πŸ‡§ London 9,281 2003
28
RSAintactinsurance.co.uk

A multinational insurer with a 300-year heritage, operating across Europe with significant businesses in the UK, Ireland, and Luxembourg Employing over 4,500 people

Insurance πŸ‡¬πŸ‡§ London 8,918 n/a
29
Allianz UKallianz.co.uk

Global financial services provider offering commercial and personal insurance products through brokers, focusing on employee growth, diversity, and sustainability for a better future

Insurance πŸ‡¬πŸ‡§ Guildford 8,735 n/a
30
Legal & Generallegalandgeneral.com

Provides financial services through asset management, pension risk transfers, and retail savings while investing capital responsibly to deliver long-term shareholder returns.

Financial Services πŸ‡¬πŸ‡§ London 7,832 n/a
31
TP ICAPtpicap.com

Specialist in connecting clients to liquidity and data solutions across financial and commodities markets with advanced technology and global presence.

Financial Services πŸ‡¬πŸ‡§ Liverpool Street 7,548 n/a
32
NatWestnatwest.com

Provides comprehensive banking services to personal, small business, and SME customers, supports the UK economy through lending to businesses, and fosters entrepreneurship.

Banking πŸ‡¬πŸ‡§ 7,041 n/a
33
Coventry Building Societycoventrycareers.co.uk

Financial institution offering diverse career opportunities, focusing on member-first service, innovation, and promoting equality, diversity, and inclusion.

Banking πŸ‡¬πŸ‡§ Coventry 6,612 1884
34
FNZfnz.com

We provide a global wealth management platform to help financial institutions and wealth managers simplify operations and enable millions to invest

Financial Services πŸ‡¬πŸ‡§ London 6,270 n/a
35
Lloyds Banklloydsbank.com

A UK-based bank focusing on serving the needs of individuals and businesses, prioritizing what truly matters in life Connect with us online

Banking πŸ‡¬πŸ‡§ London 5,996 n/a
36
Direct Line Groupdirectlinegroupcareers.com

Insurance services integration into Aviva plc, focusing on providing updates and news through Aviva's communication channels.

Insurance πŸ‡¬πŸ‡§ Bromley 5,968 n/a
37
NFU Mutualnfumutual.co.uk

Providing personalized insurance, life assurance, investments, and pensions with strong community relationships and customer-focused mutual business model.

Insurance πŸ‡¬πŸ‡§ Stratford-upon-Avon 5,693 1910
38
Aberdeenaberdeenplc.com

Providing wealth and investment services focused on helping clients plan, manage portfolios, and navigate financial futures with insight.

Financial Services πŸ‡¬πŸ‡§ Edinburgh 5,527 n/a
39
SS&C GlobeOpssctech.com

Global provider of cloud-based fund services and technology for hedge funds, private equity, and asset managers, offering outsourcing support for operational efficiency and risk reduction

Financial Services πŸ‡¬πŸ‡§ London 5,416 2000
40
Monzomonzo.com

A mobile-first bank focused on solving problems, treating customers fairly, and being transparent to make banking better

Financial Services πŸ‡¬πŸ‡§ London 5,267 2015
41
Schrodersschroders.com

Manages investments globally for institutions, intermediaries, and individuals, focusing on active management and sustainability to create prosperity and resilient outcomes.

Financial Services πŸ‡¬πŸ‡§ London 4,905 1804
42
EBRDebrd.com

The company focuses on building sustainable economies, supporting countries affected by war, promoting equality, and leveraging digital technology for positive change

Banking πŸ‡¬πŸ‡§ London 4,789 1991
43
Travelextravelex-corporate.com

A leading specialist provider of foreign exchange products and services, with a global presence through stores, ATMs, online platform, and wholesale distribution

Financial Services πŸ‡¬πŸ‡§ Peterborough 4,717 n/a
44
Virgin Moneyvirginmoneyukplc.com

A member of the Virgin Group, this company aims to create positive customer experiences by offering innovative banking products and services

Financial Services πŸ‡¬πŸ‡§ Glasgow 4,512 n/a
45
Prudential UKmandg.com

It provides life and pension services, focusing on longevity, risk management, and multi-asset investment under the Prudential and M&G brands.

Financial Services πŸ‡¬πŸ‡§ Fenchurch Street 4,402 n/a
46
The Co-operative Bank plcco-operativebank.co.uk

A customer-led bank with ethical policies, championing important causes, avoiding fossil fuels, and promoting human rights in finance

Financial Services πŸ‡¬πŸ‡§ Manchester 4,347 1872
47
The AAtheaa.com

A long-standing company prioritizing drivers with comprehensive driving services including insurance, roadside assistance, car maintenance, and more for confident, lifelong partnerships

Motor Vehicle Manufacturing πŸ‡¬πŸ‡§ Basingstoke 4,204 1905
48
TSB Banktsb.co.uk

Innovative banking solution providing simple, customer-centric services with a commitment to community, serving 5 million customers with over 6,000 employees

Banking πŸ‡¬πŸ‡§ London 4,161 1812
49
Royal Londonroyallondon.com

A purpose-driven mutual company focused on protecting and investing for the future, promoting inclusivity, diversity, and a positive workplace environment for all

Financial Services πŸ‡¬πŸ‡§ London 4,058 1861
50
Man Groupman.com

Global firm managing alternative investments, seeking outperformance for clients through systematic, discretionary, and solutions-based strategies across various asset classes.

Investment Management πŸ‡¬πŸ‡§ London 3,987 1783
51
M&Gmandg.com

An international savings and investments business managing assets for retail and institutional clients, with a focus on helping people grow their savings responsibly

Financial Services πŸ‡¬πŸ‡§ London 3,717 n/a
52
Royal Bank of Scotland Businessrbs.co.uk

Provide Scottish businesses with expert insights, analysis, and quick account support through webchat to help them grow effectively.

Banking πŸ‡¬πŸ‡§ Edinburgh 3,622 1727
53
Janus Henderson Investorsjanushenderson.com

The company is dedicated to helping clients achieve financial success by offering differentiated insights, disciplined investments, and world-class service

Financial Services πŸ‡¬πŸ‡§ London 3,515 n/a
54
Hastings Directhastingsdirectcareers.com

Fast-growing UK insurance provider offering car, van, bike, and home insurance with digital focus, strong partnerships, and customer retention.

Insurance πŸ‡¬πŸ‡§ East Sussex 3,492 n/a
55
St. James’s Placesjp.co.uk

Providing personalized financial planning and wealth management services through experienced professionals to help clients achieve their financial goals.

Financial Services πŸ‡¬πŸ‡§ Cirencester 3,459 1991
56
Domestic & Generaldomesticandgeneral.com

Protection, repair, and care for household appliances including fridges, washing machines, TVs, and boilers, ensuring reliable home operation.

Financial Services πŸ‡¬πŸ‡§ London 3,376 1912
57
Tidetide.co

Leading fintech providing UK and Indian SMEs with business accounts, banking services, and admin tools Award-winning with global recognition and funding

Financial Services πŸ‡¬πŸ‡§ London 3,323 2015
58
Student Loans Companygov.uk

Provide financial support through loans and grants for tuition fees, living costs, and study expenses to UK university and college students.

Financial Services πŸ‡¬πŸ‡§ Glasgow 3,312 1990
59
M-KOPAm-kopa.com

Affordable smartphone and e-motorbike financing with embedded digital financial services, leveraging AI-driven credit analytics for emerging market customers.

Financial Services πŸ‡¬πŸ‡§ London 3,301 2011
60
Starlingstarlingbank.com

This company is a digital bank offering fast technology, fair service, and honest values, focused on solving customer problems and building sustainable solutions

Banking πŸ‡¬πŸ‡§ London 3,231 2014
61
Yorkshire Building Societyybs.co.uk

mutual financial institution managing assets for members, focusing on customer care, community support, and employee well-being.

Financial Services πŸ‡¬πŸ‡§ Bradford 3,114 1864
62
Barclaycardhome.barclays

A global payment business offering flexible payment solutions, short-term credit, and innovative contactless and mobile payment schemes to consumers and businesses worldwide

Financial Services πŸ‡¬πŸ‡§ London 3,083 n/a
63
PIB Grouppibgroup.co.uk

A specialist insurance solutions provider in the UK market and beyond, offering commercial and personal lines products through acquisitions and expertise

Insurance πŸ‡¬πŸ‡§ London 3,023 2015
64
Gallagher Reajg.com

Provides strategic reinsurance brokerage services using data analytics to meet clients' unique risk transfer and capital access needs worldwide.

Insurance πŸ‡¬πŸ‡§ London 2,947 n/a
65
Diligenta - a subsidiary of Tata Consultancy Servicesdiligenta.co.uk

A UK-based subsidiary of Tata Consultancy Services specializing in business process services for the Life and Pensions industry, delivering operational transformation and digital capabilities

Financial Services πŸ‡¬πŸ‡§ Peterborough 2,896 2005
66
Metro Bank (UK)metrobankonline.co.uk

Award-winning, customer-centric bank offering innovative banking services, open longer hours, with a strong focus on community, hiring for attitude, and supporting customers and colleagues

Banking πŸ‡¬πŸ‡§ London 2,895 2010
67
Howden Insurance Brokers Limitedhowdengroup.com

Leading provider of insurance broking, risk consulting, and employee benefits advice, serving diverse clients globally with specialist teams and employee ownership.

Insurance πŸ‡¬πŸ‡§ London 2,875 1994
68
LV=lv.com

A UK-based specialist offering protection, investment, and retirement solutions to over a million members through a range of products and services

Financial Services πŸ‡¬πŸ‡§ Bournemouth 2,752 n/a
69
ICAPtpicap.com

A leading markets operator providing electronic execution and information services for wholesale market participants, facilitating capital flow and supporting borrowing needs

Financial Services πŸ‡¬πŸ‡§ London 2,750 n/a
70
IG Groupiggroup.com

An innovative global fintech company empowering clients to pursue financial freedom through award-winning products and platforms across 19,000 financial markets

Financial Services πŸ‡¬πŸ‡§ London 2,734 1974
71
Beazleybeazley.com

Specialist insurer offering high standards in underwriting and claims globally Market leaders in cyber, management liability, professional indemnity, and more

Insurance πŸ‡¬πŸ‡§ London 2,726 1986
72
eToroetoro.tw

Social investment platform connecting 40 million users, offering investments in stocks, digital assets, and CFDs (excluding US where cryptoassets only).

Financial Services πŸ‡¬πŸ‡§ London 2,719 2007
73
Rathbonesrathbones.com

Providing investment and wealth management services to private clients, charities, trustees, and professional partners with a focus on responsibility.

Financial Services πŸ‡¬πŸ‡§ London 2,695 1742
74
Vitalityvitality.co.uk

This company offers health insurance, life insurance, and investments that reward healthy lifestyle choices, leading to a longer, healthier, and financially secure life

Financial Services πŸ‡¬πŸ‡§ London 2,671 2004
75
Close Brothersbit.ly

UK specialist banking group providing lending and deposit taking through commercial finance for SMEs, motor and insurance retail finance, and property development funding.

Financial Services πŸ‡¬πŸ‡§ London 2,632 1878
76
Saga plc.saga.co.uk

A dynamic company focused on providing exceptional experiences for people over 50, driving positive change in markets and communities

Financial Services πŸ‡¬πŸ‡§ London 2,622 1951
77
Barclays Corporate Bankingbarclayscorporate.com

This company offers corporate banking services to UK businesses with annual turnover above Β£65 million, providing insights and inspiration on social media

Banking πŸ‡¬πŸ‡§ London 2,600 1690
78
Tesco Banktescobank.com

Providing banking products and services through a partnership with Barclays, focusing on customer value, loyalty rewards, and excellent service.

Banking πŸ‡¬πŸ‡§ Edinburgh 2,592 1997
79
Liberty Specialty Marketslibertyspecialtymarkets.com

Global provider of specialty and commercial insurance and reinsurance products with 1,900 employees in 60 offices worldwide, backed by a Fortune 100 company for financial strength

Insurance πŸ‡¬πŸ‡§ London 2,536 1994
80
Barclays Wealth Managementprivatebank.barclays.com

Providing expert wealth management services through a regional network of financial experts to help clients manage wealth effectively.

Financial Services πŸ‡¬πŸ‡§ London 2,528 n/a
81
Lloyd'slloyds.com

Global marketplace connecting underwriters and brokers to provide insurance and reinsurance solutions through collective intelligence and risk-sharing expertise.

Insurance πŸ‡¬πŸ‡§ London 2,501 1688
82
Markerstudy Groupmarkerstudy.com

Specialist in niche motor insurance products targeting unique customer segments, leveraging expert underwriting and strong broker relationships.

Insurance πŸ‡¬πŸ‡§ Sevenoaks 2,498 2001
83
AXIS (AXIS Capital)axiscapital.com

specialty insurer and reinsurer providing tailored insurance and reinsurance solutions globally, focusing on collaboration, diversity, and responsible business practices

Insurance πŸ‡¬πŸ‡§ Pembroke 2,493 n/a
84
Couttscoutts.com

Offers personalized private banking and wealth management services, acting as trusted partners for client growth and guidance in the UK and globally, committed to responsible environmental and social governance.

Banking πŸ‡¬πŸ‡§ London 2,488 n/a
85
Phoenix Groupthephoenixgroup.com

The company is the UK's largest long term savings and retirement business, managing 'heritage' books of business and offering opportunities for development

Financial Services πŸ‡¬πŸ‡§ London 2,468 n/a
86
Qube Research & Technologiesqube-rt.com

Global quant and systematic investment manager using technology and data for scientific approach to investing, driving innovation for high quality returns Multiple open positions available

Financial Services πŸ‡¬πŸ‡§ London 2,393 2018
87
Euro Exim Bankeuroeximbank.com

Provide international trade finance services including letters of credit, bank guarantees, bonds, escrow, and merchant accounts for corporate clients.

International Trade and Development πŸ‡¬πŸ‡§ Borehamwood 2,382 2017
88
London Stock Exchangelondonstockexchange.com

Global financial marketplace providing extensive access to capital markets and liquidity across multiple asset classes for international businesses, governments, and investment funds.

Financial Services πŸ‡¬πŸ‡§ London 2,358 1698
89
L&G – Asset Managementam.landg.com

Asset management firm focusing on responsible investing, client partnership, innovation across public and private assets, and global professional collaboration.

Financial Services πŸ‡¬πŸ‡§ London 2,339 n/a
90
AXA Healthaxahealth.co.uk

A health partner providing access to clinical expertise, wellness guidance, and support for individuals, businesses, and intermediaries to achieve overall wellbeing

Financial Services πŸ‡¬πŸ‡§ Tunbridge Wells 2,324 n/a
91
AXA UKaxa.co.uk

Specializes in insurance products protecting homes, cars, businesses, and offers affordable healthcare plans for UK and international customers.

Financial Services πŸ‡¬πŸ‡§ London 2,289 n/a
92
The Very Grouptheverygroup.jobs

An online retailer offering a wide range of products with flexible payment options to help families say yes to the things they love

Retail πŸ‡¬πŸ‡§ Liverpool 2,226 n/a
93
S&Wswgroup.com

Financial and professional services firm specializing in wealth management, accountancy, tax advisory, and investment management solutions.

Professional Services πŸ‡¬πŸ‡§ London 2,218 1881
94
SunLife UKsunlife.co.uk

Providing support and services tailored for individuals aged 50 and above to enhance life quality and enjoyment.

Insurance πŸ‡¬πŸ‡§ Bristol 2,164 1810
95
Collinson Groupcollinsongroup.com

Global company specializing in travel solutions, airport experiences, loyalty programs, insurance, and customer engagement for millions of consumers worldwide

Consumer Services πŸ‡¬πŸ‡§ London 2,108 1989
96
Skipton Building Societyskipton.co.uk

Providing home loans, savings, and financial wellbeing support through a nationwide branch network and a diverse group of companies.

Financial Services πŸ‡¬πŸ‡§ Skipton 2,077 1853
97
Evelyn Partnersevelyn.com

A leading UK wealth management and professional services group providing good advice to individuals and businesses for almost 200 years

Financial Services πŸ‡¬πŸ‡§ London 2,048 n/a
98
Eburyebury.com

Specializes in international payments, foreign exchange, trade finance, and cash management solutions primarily for SMEs and mid-sized companies.

Financial Services πŸ‡¬πŸ‡§ London 2,025 2009
99
Shop Directtheverygroup.jobs

A leading digital and fintech retailer in the UK, offering a wide range of brands and flexible payment options for 4 million customers

Retail πŸ‡¬πŸ‡§ Speke 1,996 n/a
100
Bupa Globalbupaglobal.com

Provides premium international health insurance plans with holistic wellness focus, continuous service improvement, and coverage at home or abroad.

Insurance πŸ‡¬πŸ‡§ Brighton 1,994 1971

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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 24, 2026.

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