Company lists · Data refreshed September 2026
Top 25 Liability insurance underwriting companies based in the United Kingdom
RevenueBase identified 43 liability insurance underwriting companies headquartered in the United Kingdom as of September 2026 and tracks 585 professional contacts across them, including 274 with verified work emails. London is the largest hub.
This list covers liability insurance underwriting companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 15, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest liability insurance underwriting companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 215 contacts → | ||||
Strong evidence “Newline Group is a market leading specialty insurance group that operates through three underwriting platforms: Newline Syndicate 1218 at Lloyd’s, Newline Insurance Company…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 37 contacts → | ||||
Strong evidence “Medical & Commercial International (MCI) specialises in underwriting international liability risks.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 25 contacts → | ||||
Partial evidence “Angel Risk Management Angel Risk Management was formed in 2003 by a group of insurance industry professionals and became part of the AXA XL Group of Companies in April 2010.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 16 contacts → | ||||
Indirect evidence “XS Assure is a specialist underwriter of financial lines risks, including hard-to-place risks.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 15 contacts → | ||||
Partial evidence “Underwriting of Commercial Combined and Property Owners risks with ‘A’ rated capacity for both standard and non-standard risks including non-standard construction (Including…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 13 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 12 contacts → | ||||
Strong evidence “Underwriting and Claims Handling Agency based in Belfast, providing bespoke Commercial Motor, Liability & Contractors All Risks insurance.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 12 contacts → | ||||
Partial evidence “Syndicate 2525 is a specialist Employer’s and Third Party Liability Lloyd’s insurer.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 11 contacts → | ||||
Strong evidence “Yutree Underwriting is a modern, dynamic,independent underwriting agency, specialising in a wide range of commercial insurance products tailored to the needs of brokers and their…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 contacts → | ||||
Strong evidence “Indigo Underwriters is a Lloyd's Coverholder and Underwriting Agency focused exclusively on life, accident, health and worker's compensation insurance, reinsurance and…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Strong evidence “Underwriting insurance solutions for the 1 in 5 UK citizens routinely REFUSED: Liability - Motor - Property Cover.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Strong evidence “PLATINUM UNDERWRITING LTD is an insurance company based out of United Kingdom.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Indirect evidence “PII.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Partial evidence “Cobra Network Underwriting (CNU) is an established underwriting company offering an exclusive range of commercial products.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Strong evidence “Gem Underwriting Agency is a specialist Managing General Agent (MGA) offering liability insurance solutions across the UK.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Strong evidence “Hathaway & Cope is a wholesale Insurance Broker established in 1982 and are specialist Public, Employers & Excess of Loss Liability scheme providers to Retail Insurance Brokers.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Partial evidence “Kudos is a specialist UK liability adjusting firm providing a high quality personalised service with a reputation for integrity and high professional standards.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Partial evidence “Forge Underwriting is an underwriting agency focused on select financial and professional lines classes of business on a worldwide basis, including business domiciled in the USA.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Partial evidence “Arrow Underwriting Agency Limited is an Independent Underwriting Consultancy business focused on bringing an innovative, flexible and cost effective approach to transacting…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Partial evidence “Troon is a broker only City based underwriting agency, delivering a speedy and slick solution to our brokers so that they can serve their client’s business needs more effectively.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Partial evidence “StartPoint Executive Risks is a London-based Managing General Underwriter that delivers innovative executive liability solutions including D&O and other related products for…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Strong evidence “The Underwriting division within Carrolls is an in-house MGA specialising in a range of product offerings, such as- High Hazard and Contractors Liability - Motorsport Liability -…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Strong evidence “We are an Underwriting Agency specialising in Public/Product Liability insurance for UK based Manufacturers, Research & Development Organisations and University Spin-Offs.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “Folgate underwrites classes such as Property, General Liability, Professional Liability, Directors & Officers and Warranty and binding authorities.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “SHINC [*1] is a London based MGA specialising in marine liability risks.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: liability insurance underwriting companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names liability insurance underwriting companies.
- Partial evidence
- Its own public description names part of liability insurance underwriting companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name liability insurance underwriting companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 43 liability insurance underwriting companies based in the United Kingdom
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Liability insurance underwriting companies based in the United Kingdom at a glance
As of Sep 15, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 43 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among liability insurance underwriting companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “liability insurance underwriting companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names liability insurance underwriting companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among liability insurance underwriting companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 274 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 15, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names liability insurance underwriting companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many liability insurance underwriting companies are there based in the United Kingdom?
RevenueBase identified 43 liability insurance underwriting companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Newline Group, headquartered in London, tops this list with the largest team on record.
Which city has the most liability insurance underwriting companies?
London leads with 24 headquartered companies, followed by Chelmsford (3) and London London (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 274 verified decision-maker contacts tracked across these 43 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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