Company lists · Data refreshed September 2026

Top 25 Insurance underwriting firms based in the United Kingdom

Name: Insurance underwriting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 63 companies tracked

RevenueBase identified 63 insurance underwriting firms headquartered in the United Kingdom as of September 2026 and tracks 3,458 professional contacts across them, including 731 with verified work emails. London is the largest hub.

This list covers insurance underwriting firms 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 17, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

63Companies

3,458Contacts tracked

731Verified emails

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The 25 largest insurance underwriting firms based in the United Kingdom

Ranked by team size

Top 25 of 63 insurance underwriting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to insurance underwriting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	QBE Europe	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,343 contacts →
	Indirect evidence “At QBE we’re driven by our purpose of enabling a more resilient future.” Source: RevenueBase Database · checked Sep 17, 2026
2	Arch Insurance UK Limited	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	330 contacts →
	Partial evidence “At Arch Insurance, we trade how you want to trade.” Source: RevenueBase Database · checked Sep 17, 2026
3	Dual Group	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	237 contacts →
	Partial evidence “DUAL is a different kind of underwriting business.” Source: RevenueBase Database · checked Sep 17, 2026
4	Hyperexponential	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	220 contacts →
	Strong evidence “hyperexponential (hx) is the agentic platform for underwriting work for commercial P&C insurance.” Source: RevenueBase Database · checked Sep 17, 2026
5	QBE RE	Partial evidence	City Of London, United KingdomHQ checked Sep 17, 2026	51-200	177 contacts →
	Partial evidence “QBE Re is the reinsurance division of the QBE Insurance Group, one of the world's leading international insurers and reinsurers.” Source: RevenueBase Database · checked Sep 17, 2026
6	Imaginera	Strong evidence	Oxford, United KingdomHQ checked Sep 17, 2026	51-200	62 contacts →
	Strong evidence “Imaginera builds next-generation underwriting systems that empower insurance, reinsurance, ILS and broker teams through the creative application of technology.” Source: RevenueBase Database · checked Sep 17, 2026
7	Alchemy Underwriting	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	44 contacts →
	Partial evidence “Our model is built around underwriting excellence, driven by rigorous risk selection, innovative, intelligent underwriting and catastrophe modelling.” Source: RevenueBase Database · checked Sep 17, 2026
8	Medical & Commercial International Limited	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	37 contacts →
	Partial evidence “Medical & Commercial International (MCI) specialises in underwriting international liability risks.” Source: RevenueBase Database · checked Sep 17, 2026
9	Touchstone Underwriting	Strong evidence	Watford, United KingdomHQ checked Sep 17, 2026	11-50	35 contacts →
	Strong evidence “Touchstone Underwriting are a team of innovative and experienced underwriters, specialising in commercial insurance business including the following areas: 1.” Source: RevenueBase Database · checked Sep 17, 2026
10	Barbican Insurance Group	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	31 contacts →
	Partial evidence “Barbican Insurance Group underwrites business predominantly through our syndicates at Lloyd’s.” Source: RevenueBase Database · checked Sep 17, 2026
11	AURUM	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	29 contacts →
	Partial evidence “aurum motor & aurum home: We underwrite high value home insurance for High Net Worth and Ultra High Net Worth individuals, providing worldwide cover for contents, art and…” Source: RevenueBase Database · checked Sep 17, 2026
12	Aspect	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	28 contacts →
	Partial evidence “Re)insurance for tougher risks.” Source: RevenueBase Database · checked Sep 17, 2026
13	Navium Marine Limited	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1-10	25 contacts →
	Partial evidence “Navium started trading in May 2021 and was formed as a result of a partnership between Clive Washbourn (CEO), Pine Walk Capital Limited, and Fidelis Insurance Holdings Limited.” Source: RevenueBase Database · checked Sep 17, 2026
14	Euna Underwriting	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “We’ve listened.” Source: RevenueBase Database · checked Sep 17, 2026
15	Mercia Underwriting Solutions LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	11-50	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 17, 2026
16	Amet Insurance	Strong evidence	Belfast, United KingdomHQ checked Sep 17, 2026	11-50	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 17, 2026
17	Kinetiq Underwriting	Partial evidence	Harlow, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “At kinetiQ, we’re on a clear mission, to use technology, data and traditional expertise to create a smarter, more connected approach to underwriting.” Source: RevenueBase Database · checked Sep 17, 2026
18	Tipstrade LTD	Partial evidence	Worminghall, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “We are the UK's leading professional used car underwriting business, and have been managing the motor trade's used car stock requirements since 1993.” Source: RevenueBase Database · checked Sep 17, 2026
19	Yutree Underwriting	Strong evidence	Newmarket, United KingdomHQ checked Sep 17, 2026	11-50	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 17, 2026
20	Generation Underwriting	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 17, 2026	1-10	11 contacts →
	Partial evidence “Generation Underwriting Management Limited is a successful Underwriting Agency that was set up in Newcastle upon Tyne in 2010.” Source: RevenueBase Database · checked Sep 17, 2026
21	Indigo Underwriters	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	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 17, 2026
22	ARK Insurance Group Limited	Strong evidence	Coventry, United KingdomHQ checked Sep 17, 2026	11-50	8 contacts →
	Strong evidence “Ark Insurance Group is an underwriting agency with Lloyds coverholder status.” Source: RevenueBase Database · checked Sep 17, 2026
23	Sale Insurance Services LTD	Strong evidence	Manchester, United KingdomHQ checked Sep 17, 2026	11-50	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 17, 2026
24	Incepta Risk Management LTD	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
25	Meteorwrite LTD	Partial evidence	Rochford, United KingdomHQ checked Sep 17, 2026	1-10	7 contacts →
	Partial evidence “The needs of motor insurance clients come in all shapes and sizes, like meteors, they are not uniform or standard.” Source: RevenueBase Database · checked Sep 17, 2026

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: insurance underwriting firms. 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 insurance underwriting firms.
Partial evidence: Its own public description names part of insurance underwriting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insurance underwriting firms. 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 63 insurance underwriting firms based in the United Kingdom

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Insurance underwriting firms based in the United Kingdom at a glance

As of Sep 17, 2026

21.1%Verified-email coverage

54.9Average contacts per company

11-50Median size (employees)

57.1%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

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 63 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 insurance underwriting firms, 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 “insurance underwriting firms”. 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 insurance underwriting firms), 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 insurance underwriting firms, 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, 731 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 17, 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.

Insurance underwriting firms by metro

Insurance underwriting firms in London36

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 insurance underwriting firms, 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 insurance underwriting firms are there based in the United Kingdom?

RevenueBase identified 63 insurance underwriting firms 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?

QBE Europe, headquartered in London, tops this list with the largest team on record.

Which city has the most insurance underwriting firms?

London leads with 36 headquartered companies, followed by Newcastle Upon Tyne (2) and Belfast (1).

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 731 verified decision-maker contacts tracked across these 63 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 17, 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.