Company lists · Data refreshed September 2026

Top 25 Specialty insurance underwriters based in the United Kingdom

Name: Specialty insurance underwriters based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 167 companies tracked

RevenueBase identified 167 specialty insurance underwriters headquartered in the United Kingdom as of September 2026 and tracks 9,334 professional contacts across them, including 5,551 with verified work emails. London is the largest hub.

This list covers specialty insurance underwriters 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 18, 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 18, 2026 86% judged on-target in blind review

167Companies

9,334Contacts tracked

5,551Verified emails

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The 25 largest specialty insurance underwriters based in the United Kingdom

Ranked by team size

Top 25 of 167 specialty insurance underwriters based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to specialty insurance underwriters: 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	Beazley	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	1,001-5,000	2,564 contacts →
	Partial evidence “We are a specialty insurer with more than three decades of experience in providing clients with the highest standards of underwriting and claims service worldwide.” Source: RevenueBase Database · checked Sep 18, 2026
2	CFC	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	1,001-5,000	1,115 contacts →
	Strong evidence “CFC is a specialist insurance provider, pioneer in emerging risk and market leader in cyber.” Source: RevenueBase Database · checked Sep 18, 2026
3	Price Forbes	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	1,001-5,000	918 contacts →
	Indirect evidence “Our history has made us.” Source: RevenueBase Database · checked Sep 18, 2026
4	Tokio Marine Kiln	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	501-1,000	677 contacts →
	Partial evidence “Tokio Marine Kiln is a leading international insurer with a reputation for specialist underwriting excellence, great people and innovative products.” Source: RevenueBase Database · checked Sep 18, 2026
5	Mcgill And Partners	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	566 contacts →
	Indirect evidence “Complex risk.” Source: RevenueBase Database · checked Sep 18, 2026
6	IQUW	Indirect evidence	City Of London, United KingdomHQ checked Sep 18, 2026	201-500	346 contacts →
	Indirect evidence “IQUW is now Starr.” Source: RevenueBase Database · checked Sep 18, 2026
7	INIGO	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	201-500	257 contacts →
	Indirect evidence “In an industry often shaped by legacy and complexity, Inigo was built to be different.” Source: RevenueBase Database · checked Sep 18, 2026
8	Newline Group	Strong evidence	London Ec3m 5bn, United KingdomHQ checked Sep 18, 2026	201-500	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 18, 2026
9	Faraday Underwriting Limited	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	107 contacts →
	Indirect evidence “Professional.” Source: RevenueBase Database · checked Sep 18, 2026
10	Miles Smith	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	1,001-5,000	104 contacts →
	Strong evidence “Specialist Risk Group (SRG) is a group of specialist insurance intermediaries supporting businesses and individuals with complex insurance requirements across the UK, Europe and…” Source: RevenueBase Database · checked Sep 18, 2026
11	JLT Specialty	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	n/a	91 contacts →
	Partial evidence “As of April 1, 2019, JLT Specialty is now a part of Marsh & McLennan.” Source: RevenueBase Database · checked Sep 18, 2026
12	Consilium Insurance Brokers	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	85 contacts →
	Strong evidence “Consilium is an independent, award-winning global (re)insurance broker, trading more than USD 1bn GWP annually and powered by over 100 specialists.” Source: RevenueBase Database · checked Sep 18, 2026
13	Think Insurance	Strong evidence	Walsall, United KingdomHQ checked Sep 18, 2026	51-200	67 contacts →
	Strong evidence “Think Insurance is a specialist insurance broker based in the West Midlands, established in 2009, and bringing together years of industry experience.” Source: RevenueBase Database · checked Sep 18, 2026
14	Envelop Risk	Strong evidence	Bristol, United KingdomHQ checked Sep 18, 2026	11-50	64 contacts →
	Strong evidence “Envelop Risk is a global specialty cyber underwriting firm, combining decades of insurance industry expertise with sophisticated cyber and machine learning analytics tools.” Source: RevenueBase Database · checked Sep 18, 2026
15	K2 International	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	11-50	53 contacts →
	Strong evidence “K2 International is a specialty insurance and reinsurance underwriting platform – the London-based arm of K2 Insurance Services, a leading underwriting and distribution franchise…” Source: RevenueBase Database · checked Sep 18, 2026
16	DOA Underwriting	Strong evidence	Great Notley, United KingdomHQ checked Sep 18, 2026	51-200	52 contacts →
	Strong evidence “Welcome to DOA, an independent, family-run Insurance Intermediary specialising in underwriting insurance products across niche market sectors throughout the UK since 1996.” Source: RevenueBase Database · checked Sep 18, 2026
17	Camberford Underwriting	Partial evidence	Bromley, United KingdomHQ checked Sep 18, 2026	51-200	52 contacts →
	Partial evidence “Established in 1958, Camberford Underwriting (previously Camberford Law plc) is a highly respected insurance underwriting agency with a history of providing market leading…” Source: RevenueBase Database · checked Sep 18, 2026
18	First Underwriting Limited	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	46 contacts →
	Partial evidence “First for Specialist - First for Expertise - First for Service First Underwriting offer broker partners the security of a large organisation, but with the agility, expertise and…” Source: RevenueBase Database · checked Sep 18, 2026
19	Alchemy Underwriting	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	11-50	44 contacts →
	Indirect evidence “Our model is built around underwriting excellence, driven by rigorous risk selection, innovative, intelligent underwriting and catastrophe modelling.” Source: RevenueBase Database · checked Sep 18, 2026
20	Ergo UK Specialty Limited	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	51-200	40 contacts →
	Indirect evidence “The ERGO brand is well-established in its target markets, supported throughout the year by Group A-rated securities and the strong economic ownership of ERGO Versicherung AG.” Source: RevenueBase Database · checked Sep 18, 2026
21	Medical & Commercial International Limited	Partial evidence	London, United KingdomHQ checked Sep 18, 2026	11-50	37 contacts →
	Partial evidence “Medical & Commercial International (MCI) specialises in underwriting international liability risks.” Source: RevenueBase Database · checked Sep 18, 2026
22	Icen Risk	Indirect evidence	London, United KingdomHQ checked Sep 18, 2026	11-50	35 contacts →
	Indirect evidence “Icen was created and is led by a combination of experience and expertise.” Source: RevenueBase Database · checked Sep 18, 2026
23	Collegiate Management Services LTD	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	11-50	33 contacts →
	Strong evidence “Collegiate Management Services are a Specialist UK Professional Indemnity Underwriter & Claims Management Company with over 30 years experience in providing insurance and claims…” Source: RevenueBase Database · checked Sep 18, 2026
24	Absolute Insurance Brokers	Partial evidence	Croydon, United KingdomHQ checked Sep 18, 2026	11-50	32 contacts →
	Partial evidence “In a world characterised by faceless call centres, Absolute Insurance Brokers gives you the benefit of a personal service offered by exceptional people with expert insurance…” Source: RevenueBase Database · checked Sep 18, 2026
25	Pantheon Specialty	Strong evidence	London, United KingdomHQ checked Sep 18, 2026	11-50	31 contacts →
	Strong evidence “Pantheon Specialty is an independently owned specialist insurance brokerage.” Source: RevenueBase Database · checked Sep 18, 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: specialty insurance underwriters. 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 specialty insurance underwriters.
Partial evidence: Its own public description names part of specialty insurance underwriters, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name specialty insurance underwriters. 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 167 specialty insurance underwriters based in the United Kingdom

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Specialty insurance underwriters based in the United Kingdom at a glance

As of Sep 18, 2026

59.5%Verified-email coverage

55.9Average contacts per company

11-50Median size (employees)

50.9%Largest-city concentration · London

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 167 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 specialty insurance underwriters, 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 “specialty insurance underwriters”. 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 specialty insurance underwriters), 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 specialty insurance underwriters, 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, 5,551 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 18, 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.

Specialty insurance underwriters by metro

Specialty insurance underwriters in London85

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 specialty insurance underwriters, 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 specialty insurance underwriters are there based in the United Kingdom?

RevenueBase identified 167 specialty insurance underwriters 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?

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

Which city has the most specialty insurance underwriters?

London leads with 85 headquartered companies, followed by Birmingham (4) and City Of London (4).

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 5,551 verified decision-maker contacts tracked across these 167 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 18, 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.