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The 100 largest Financial Services companies in the United Kingdom

Tamtam tracks 3,370 Financial Services companies 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 2,750. Half of them were founded in 1991 or later. The most common headquarters are London (66), Edinburgh (5) and Cardiff (2).

πŸ‡¬πŸ‡§ United Kingdom100 companiesUpdated Oct 9, 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
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
5
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
6
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
7
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
8
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
9
Finastrafinastra.com

Focusing on OPEN Collaboration & Finance, Finastra provides innovative technology solutions for global financial services, promoting financial inclusion and diversity

Financial Services πŸ‡¬πŸ‡§ Paddington 12,499 2017
10
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
11
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
12
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
13
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
14
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
15
Capcocapco.com

Global technology and management consultancy specializing in digital transformation, data-driven solutions, and innovation for banking, payments, capital markets, insurance, and energy sectors.

Financial Services πŸ‡¬πŸ‡§ London 8,026 1998
16
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
17
Acuity Analyticsacuityanalytics.com

Provides bespoke research, analytics, and technology solutions to financial services, helping institutions operate efficiently and unlock human capital to drive revenue.

Financial Services πŸ‡¬πŸ‡§ London 7,619 2003
18
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
19
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
20
Financial Conduct Authorityfca.org.uk

Regulation and supervision of financial firms to ensure fair conduct, protect consumers, and maintain market integrity and stability.

Financial Services πŸ‡¬πŸ‡§ Stratford 5,760 2013
21
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
22
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
23
Moniepoint Groupmoniepoint.com

A leading fintech company offering digital payment solutions, credit access, and business management tools to help businesses worldwide grow and succeed

Financial Services πŸ‡¬πŸ‡§ London 5,413 2015
24
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
25
LSEG Data & Analyticslseg.com

A global provider of financial markets data and infrastructure, enabling customers to gain insights through data, feeds, analytics, and workflow solutions

Financial Services πŸ‡¬πŸ‡§ London 5,147 n/a
26
Apex Group Ltd (UK Branch)apexgroup.com

Global financial services provider offering fund services, digital onboarding, custody, depositary, business services, and ESG advisory for asset managers and private clients.

Financial Services πŸ‡¬πŸ‡§ London 4,990 2003
27
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
28
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
29
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
30
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
31
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
32
Fitch Group, Inc.fitch.group

Global leader in financial information services with operations in 30+ countries Offers credit ratings, research, risk solutions, training, and venture investments Dual headquarters in London and New York

Financial Services πŸ‡¬πŸ‡§ London 4,203 1913
33
SumUpsumup.co.uk

A global financial technology company supporting over 4 million small merchants in 36 markets, committed to environmental and social causes

Financial Services πŸ‡¬πŸ‡§ London 4,186 2012
34
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
35
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
36
Paysafepaysafe.com

Specialised payments platform enabling businesses and consumers to connect and transact through payment processing, digital wallets, and online cash solutions.

Financial Services πŸ‡¬πŸ‡§ London 3,539 1996
37
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
38
Admiral Group - MBA Leadership Programsadmiraljobs.co.uk

A company seeking future leaders who can make a difference, inspire teams, and grow into great leaders within a personalized and impactful environment

Financial Services πŸ‡¬πŸ‡§ Cardiff 3,515 1991
39
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
40
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
41
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
42
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
43
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
44
Standard Life Aberdeenabrdn.com

The company used to be known as Standard Life Aberdeen but rebranded to abrdn in July 2021 They offer various client-facing financial services globally

Financial Services πŸ‡¬πŸ‡§ Edinburgh 3,204 1825
45
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
46
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
47
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
48
TradingViewtradingview.com

Social network and charting platform for traders and investors, used by 50 million+ users worldwide with open source charts used by financial giants

Financial Services πŸ‡¬πŸ‡§ London 2,761 2011
49
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
50
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
51
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
52
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
53
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
54
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
55
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
56
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
57
Financial Ombudsman Servicefinancial-ombudsman.org.uk

Free service resolving disputes between consumers and financial businesses, investigating complaints, ensuring fair treatment, and enforcing legal remedies.

Financial Services πŸ‡¬πŸ‡§ London 2,619 2001
58
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
59
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
60
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
61
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
62
Checkout.comcheckout.com

A financial technology company providing a high-performance payments platform for enterprise and scaling businesses worldwide, processing payments, payouts, and managing card programs

Financial Services πŸ‡¬πŸ‡§ London 2,343 2012
63
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
64
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
65
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
66
Huntswoodhuntswood.com

A trusted partner offering resourcing, outsourcing, and advisory services to help clients succeed and create better outcomes

Financial Services πŸ‡¬πŸ‡§ Reading 2,287 1996
67
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
68
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
69
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
70
RBC Brewin Dolphinbrewin.co.uk

Providing personalised financial planning, investment management, and specialist advice to individuals, advisers, businesses, and charities for wealth growth and protection.

Financial Services πŸ‡¬πŸ‡§ London 1,967 1762
71
Traditiontradition.com

Provides brokerage and market data services across capital and commodity markets, facilitating transactions in money markets, interest rates, equities, and energy derivatives.

Financial Services πŸ‡¬πŸ‡§ London 1,948 1959
72
Lowelllowell.com

A leading credit management company in Europe offering debt purchasing, collections, and outsourcing services with a focus on ethical debt management

Financial Services πŸ‡¬πŸ‡§ Leeds 1,905 2004
73
Quilterquilter.com

A UK wealth management company dedicated to creating prosperity for present and future generations through high-quality investment products and services

Financial Services πŸ‡¬πŸ‡§ London 1,900 n/a
74
Ocorianocorian.com

A global provider of fund administration, capital markets, corporate, and compliance solutions for various clients, offering expertise, trust, and scale

Financial Services πŸ‡¬πŸ‡§ London 1,846 1971
75
Dojodojo.careers

A scaling fintech company empowering businesses and diners with fast funding, payments, smart integrations, virtual queues, and restaurant bookings through innovative technology

Financial Services πŸ‡¬πŸ‡§ London 1,841 2019
76
Ulster Bankulsterbank.co.uk

provides business banking services, expert insights, customer support, and maintains open communication channels with clear social media guidelines

Financial Services πŸ‡¬πŸ‡§ Belfast 1,793 n/a
77
M&G Investmentsmandg.com

Global asset manager with over 90 years of experience, offering a range of investment solutions across various asset classes for customers worldwide

Financial Services πŸ‡¬πŸ‡§ London 1,761 n/a
78
Scottish Widowsscottishwidows.co.uk

Providing financial advisers with market-leading products, online tools, calculators, and dedicated support to build and protect client relationships.

Financial Services πŸ‡¬πŸ‡§ Edinburgh 1,739 1815
79
Cooper Parrylinktr.ee

This B Corp provides audit, tax, innovation, tech, outsourcing, deals, wealth, sustainability, legal, and digital services to entrepreneurial businesses.

Financial Services πŸ‡¬πŸ‡§ Uk 1,698 1850
80
Ninety Oneninetyone.com

Independent global asset manager offering active strategies across equities, fixed income, multi-asset, and alternatives to institutions, advisors, and individual investors worldwide

Financial Services πŸ‡¬πŸ‡§ London 1,646 1991
81
Barclays Private Bankprivatebank.barclays.com

A premier private bank offering specialized investment, banking, lending, and wealth advisory services to high-net-worth clients globally with tailored opportunities and expert advice

Financial Services πŸ‡¬πŸ‡§ London 1,615 1690
82
Leeds Building Societyleedsbuildingsociety.co.uk

providing savings and mortgage services to help people achieve home ownership, supported by a passionate and innovative team

Financial Services πŸ‡¬πŸ‡§ Leeds 1,604 1875
83
Baillie Giffordbailliegifford.com

A leading UK investment management firm operated as a partnership by senior executives, focused on genuine long-term thinking for client stability and employee motivation

Financial Services πŸ‡¬πŸ‡§ Edinburgh 1,598 1908
84
Misysfinastra.com

It combines Misys and D+H to form a leading fintech company, Finastra, now the third largest in the world.

Financial Services πŸ‡¬πŸ‡§ London 1,535 1979
85
CMC Marketscmcmarkets.com

Provides online trading and investing platforms with broad financial services, partnering with major organizations and innovating in fintech.

Financial Services πŸ‡¬πŸ‡§ London 1,517 1989
86
Trading 212trading212.com

A company focused on democratizing financial markets through innovative products, with a mission to enable everyone to build wealth Regulatory compliance ensures investor protection

Financial Services πŸ‡¬πŸ‡§ London 1,502 2004
87
XPS Groupxpsgroup.com

Leading UK pension consulting and administration business providing services to over 1,500 schemes, with awards for third-party administration, consultancy, and diversity

Financial Services πŸ‡¬πŸ‡§ Reading 1,492 2018
88
AJ Bellajbell.co.uk

Provides UK customers and advisers with low-cost, wide investment choices, online tools, and services for managing SIPPs, ISAs, and accounts.

Financial Services πŸ‡¬πŸ‡§ Manchester 1,488 n/a
89
Vanquisvanquis.com

Specialist bank offering credit cards, savings, vehicle finance, and a budgeting app focused on financial inclusion and responsible lending.

Financial Services πŸ‡¬πŸ‡§ Bradford 1,484 1880
90
Motability Operations Ltdmo.co.uk

Providing affordable vehicle leasing and comprehensive support services to over 815,000 disabled customers across the UK for independent mobility.

Financial Services πŸ‡¬πŸ‡§ London 1,368 1978
91
OSTTRAosttra.com

A company specializing in post-trade solutions, fostering collaboration, innovation, and efficient processes for global financial markets across all asset classes

Financial Services πŸ‡¬πŸ‡§ London 1,360 2021
92
Aviva Investorsavivainvestors.com

Global asset management firm focusing on client integration, delivering tailored investment solutions across asset classes with disciplined risk management.

Financial Services πŸ‡¬πŸ‡§ London 1,349 2008
93
Just Group plcjustgroupplc.co.uk

specialist UK financial services group focused on helping people achieve better later life through socially purposeful retirement solutions

Financial Services πŸ‡¬πŸ‡§ Reigate 1,349 n/a
94
Barnett Waddinghambarnett-waddingham.co.uk

Providing expert consultancy in risk, pensions, investment, and insurance with trusted partnerships and innovative solutions for diverse clients.

Financial Services πŸ‡¬πŸ‡§ London 1,346 1989
95
OSB Grouposb.co.uk

Specialist financial services group providing buy to let mortgages, commercial finance, and residential development funding alongside retail savings products via specialist intermediaries.

Financial Services πŸ‡¬πŸ‡§ Chatham 1,346 n/a
96
Standard Life plcstandardlifeplc.com

Providing retirement planning services, leveraging expertise and influence to improve customers' retirement journeys and future financial security.

Financial Services πŸ‡¬πŸ‡§ London 1,342 n/a
97
Resolution Liferesolutionlife.com

Global life insurance group specializing in reinsurance, acquiring, and managing portfolios of in-force life insurance policies worldwide.

Financial Services πŸ‡¬πŸ‡§ Hamilton 1,342 2003
98
Novunanovuna.co.uk

Leading UK financial services company offering retail finance, personal loans, fleet support, asset finance, and business cash flow solutions to empower customers and colleagues

Financial Services πŸ‡¬πŸ‡§ Staines-upon-Thames 1,341 n/a
99
Tullett Prebontpicap.com

A global interdealer broker facilitating trading activities in financial and energy sectors through various platforms, market data services, and award-winning brokerage solutions

Financial Services πŸ‡¬πŸ‡§ London 1,332 n/a
100
Standard Life UKstandardlife.co.uk

Management of pensions, savings, and retirement products with customer guidance, adviser collaboration, and a focus on sustainability and financial wellbeing.

Financial Services πŸ‡¬πŸ‡§ Edinburgh 1,330 1825

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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 9, 2026.

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