Largest UK Insurance Companies
The UK insurance industry is the largest in Europe and the fourth largest in the world, with over 330 long-term savings providers, 920 general insurers, more than 300,000 employees and total premium volume of over $400 billion. Following is a list of the largest and best insurance companies in the United Kingdom.
Legal & General
Legal & General Group, headquartered in London, is the largest life insurer in the UK based on new individual life insurance sales. The company provides life, home and landlord insurance, business and income protection, critical illness, accident, sickness and unemployment cover, retirement planning, later life care, investment management and other related services.
Aviva
Aviva plc is the leading life and general insurance company in the UK and Ireland. With around 23,000 employees, the company serves 19 million customers across its core markets. Aviva is the largest British general insurer and number one in the UK based on individual annuities. It offers term and whole life insurance, car, home, health, travel and accidental death insurance, prepaid funeral plans, investments, stocks & shares ISA, pensions and more.
RSA Insurance
RSA Insurance Group is one of the biggest general insurance companies in the UK. It provides personal, commercial and specialty insurance products direct and through brokers and affinity partners. In 2023, RSA reported net written premiums of £3.35 billion, loss profit before tax of £19 million, shareholders equity of £2.8 billion and total assets of £9.4 billion. RSA is one of oldest general insurers in the world. Today, it employs about 6,000 people and operates as a wholly-owned subsidiary of Canada's Intact Financial Corporation.
Direct Line
Direct Line Insurance Group, headquartered in Bromley, England, is one of the leading private motor, home, pet and commercial insurers in the United Kingdom. The company’s main brands are Direct Line, Churchill, Privilege, Darwin and Green Flag. Currently, Direct Line has approximately nine million policies in-force (ongoing operations).
Allianz
Allianz Insurance plc, part of German Allianz Group, is one of the top three general insurers in the United Kingdom. The company provides car and home insurance, musical instrument insurance, pet and equine insurance, and commercial insurance. Petplan, a subsidiary of Allianz, is the largest pet insurer in the UK. It is also the largest horse and rider insurer in the country.
Phoenix Group
Phoenix Group Holdings plc, with about 14 million customers, is one of the biggest providers of insurance products and services in the United Kingdom. The Group's companies include Phoenix Life and Phoenix Life Assurance, Phoenix Wealth, Standard Life Assurance, ReAssure and SunLife. As of November 2024, the Group had a market capitalization of approximately £5 billion.
Liverpool Victoria
Liverpool Victoria (LV=) is one of the top 10 UK insurance companies with more than seven million customers and 4,000 employees. It offers car, home, pet, travel and small business insurance, term and whole life insurance, investments, pensions and retirement services, annuities, and other services. The company is the UK's number one insurer for customer service according to UKCSI survey.
Bupa
Bupa (British United Provident Association) is the leading health insurance company in the UK. It offers individual, family and business health insurance, travel and dental insurance, and other services. Bupa operates over 120 care homes, 52 health clinics and around 400 dental centres in the United Kingdom. In the first half of 2024, the company achieved a total revenue of £8.3 billion and statutory profit before tax of £420 million.
Royal London
Royal London Mutual Insurance Society, founded in 1861, is the UK's largest mutual insurer with nearly 9 million life and protection insurance policies in force. The company offers life insurance, critical illness and income protection, business insurance, pensions, retirement plans and other services.
Admiral Group
Admiral Group plc, headquartered in Cardiff, South Wales, is one of the largest car insurance providers in the UK. The company's brands are Admiral, Bell, Diamond, Gladiator, Elephant and Veygo. The Group offers cheap car insurance, home and landlord insurance, travel insurance, commercial vehicle insurance, car finance as well as comparison and loan products.
AXA UK
AXA UK has a strong presence in the United Kingdom with a network of branches throughout the country. It provides a diverse range of insurance services to individuals, SMEs, mid-market and corporate sector. The company’s products include car, home, travel, landlord, van and health insurance, among others. AXA UK is a subsidiary of French company AXA S.A.
Ageas
Ageas, a Belgian international group, is one of the leading car and home insurance companies in the United Kingdom. It is the UK's fifth largest car insurer with more 5 million customers. The company paid out more than 99% of customers' claims in the last year. Ageas has five star rating from Defaqto.
Website: www.ageas.co.uk
Aegon
Aegon UK, based in Edinburgh, Scotland, is one of the major providers of pension, investment and life insurance products in the United Kingdom. The company serves about 4 million customers and employs more than 2,000 people through offices in London, Edinburgh, Lytham St Annes, Witham, Manchester and Peterborough.
Website: www.aegon.co.uk
AIG UK
American International Group UK Limited is one of the largest insurance companies in the UK with gross premiums written of over £3.2 billion, net premiums written of £1.4 billion and total assets of £10 billion.
Website: www.aig.co.uk
NFU Mutual
NFU Mutual, headquartered in Stratford-upon-Avon, Warwickshire, is the UK's leading rural insurer with more than 900,000 members and 280 local agencies across the UK. NFU Mutual is a trading name for National Farmers Union Mutual Insurance Society Ltd. The company has been named Insurance Brand of the Year by Which.co.uk.
Zurich Insurance UK
Zurich UK provides a wide suite of general and life insurance products and services to retail and business customers in the United Kingdom. With more than 4,500 employees, the company operates through offices in London, Birmingham, Farnborough, Glasgow, Swindon and Whiteley, among others.
Top 10 Car Insurance Companies
Here is a list of the largest UK auto insurance companies in terms of gross written premiums.
Admiral Group
Aviva
Direct Line
Hastings
AXA
Liverpool Victoria (LV=)
Ageas
Esure Group
RSA Insurance
NFU Mutual
See also: Top 50 Car Insurance Companies
Top UK Insurance Companies by Market Cap
Following are the largest UK insurance companies according to their market capitalization.
| Rank | Company | Market Capitalization (January 2025) |
| 1 | Prudential plc | £17.9 B |
| 2 | Legal & General | £14.3 B |
| 3 | Aviva plc | £13.8 B |
| 5 | Admiral Group | £8.3 B |
| 6 | Phoenix Group | £5.2 B |
| 7 | Direct Line Insurance Group | £3.5 B |