Company lists · Data refreshed September 2026

Top 25 Property and casualty reinsurers based in the United Kingdom

RevenueBase identified 59 company matches for property and casualty reinsurers associated with the United Kingdom as of September 2026 and tracks 14,393 professional contacts across them, including 5,241 with verified work emails. London is the largest hub.

This list covers company matches for property and casualty reinsurers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
59Companies
14,393Contacts tracked
5,241Verified emails
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The 25 largest property and casualty reinsurers based in the United Kingdom

Ranked by team size
Top 25 of 59 company matches for property and casualty reinsurers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,0002,463 contacts →

Exact match

“Gallagher Re is one of the largest global reinsurance brokers, helping clients access the capital they need with strategic solutions built for volatile markets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,0001,343 contacts →

Exact match

“At QBE we’re driven by our purpose of enabling a more resilient future.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,0001,201 contacts →

Exact match

“We are a specialist insurer and reinsurer with a 100-year record of helping clients navigate the world’s most complex and demanding risks.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,000926 contacts →

Exact match

“As the insurance operations within the Markel Group Inc.(NYSE: MKL), we operate the Markel Specialty, Markel International, and Markel Global Reinsurance divisions, as well as…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact match22 Bishopsgate, United KingdomHQ recorded Sep 20, 2026501-1,000853 contacts →

Exact match

“We are Canopius, a global specialty and Property & Casualty (re)insurer with offices in the UK, the US, Bermuda, Singapore and Australia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,000752 contacts →

Exact match

“The global reinsurance broker and risk, capital, and strategic advisor focused on relentless innovation and superior analytics for top client service.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchCity Of London, United KingdomHQ recorded Sep 20, 2026501-1,000484 contacts →

Exact match

“As a global specialty insurance broker, Amwins Global Risks – formerly THB – delivers insurance and reinsurance coverage to clients around the world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 20, 2026201-500370 contacts →

Exact match

“Talbot Underwriting Ltd (“Talbot”) is an international insurer and reinsurer operating within the Lloyd’s market through Syndicates 1183 and 2019.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 20, 2026201-500323 contacts →

Exact match

“Antares provides local and international insurance and reinsurance capacity, risks transfer solutions and products through our Lloyd’s and company market platforms operating from…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchCity Of London, United KingdomHQ recorded Sep 20, 202651-200177 contacts →

Exact match

“QBE Re is the reinsurance division of the QBE Insurance Group, one of the world's leading international insurers and reinsurers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200141 contacts →

Exact match

“The global reinsurance broker and risk, capital, & strategic advisor focused on relentless innovation & superior analytics for top client service.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 20, 2026201-500120 contacts →

Exact match

“AdvantageGo provides revolutionary commercial (re)insurance management solutions that will transform how you manage risk administration.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20099 contacts →

Exact match

“Price Forbes Re is an independent specialist risk strategy and reinsurance broker based in London, Bermuda, and the US.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,00069 contacts →

Exact match

“Following Marsh & McLennan’s acquisition of JLT Group, JLT Re will be joining Guy Carpenter.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5039 contacts →

Exact match

“The Berkley Re team based in London is a provider of Property & Casualty Reinsurance writing an International account from a European base.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5032 contacts →

Exact match

“New Dawn Risk Group is a specialist insurance intermediary.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5031 contacts →

Exact match

“Pantheon Specialty is an independently owned specialist insurance brokerage.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20031 contacts →

Exact match

“C&C Insurance Group provides reinsurance and insurance solutions from nine locations globally and is regulated in the UK, Guernsey, Bermuda and the Seychelles.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5016 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchHeadquarters, United KingdomHQ recorded Sep 20, 202651-20012 contacts →

Exact match

“MNK Re is an independent, specialist Lloyd's of London insurance and reinsurance broker focused on creating innovative solutions whilst upholding traditional market values.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20012 contacts →

Exact match

“SCA INTER A LTD Reinsurance Brokers delivers innovative risk solutions tailored to local and global markets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 20, 2026n/a11 contacts →

Exact match

“This page is now inactive.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5011 contacts →

Exact match

“Corniche Underwriting Ltd was founded in December 2017 and is a privately held (re)insurance speciality Managing General Agency (MGA).”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5011 contacts →

Exact match

“Welcome to JENOA – a new breed of risk partner, born for today’s ever more connected digital world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“InShare provides access and expertise to develop and deliver bespoke, effective and efficient Insurance, Reinsurance and ART solutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 59 property and casualty reinsurers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 5,241 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Property and casualty reinsurers based in the United Kingdom at a glance

As of Sep 20, 2026
36.4%Verified-email coverage
243.9Average contacts per company
51-200Median size (employees)
76.3%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
12
51-200
14
201-500
5
501-1,000
5
1,001-5,000
7
10001+
2

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 59 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “property and casualty reinsurers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 5,241 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “property and casualty reinsurers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many property and casualty reinsurers are there based in the United Kingdom?

RevenueBase identified 59 company matches for property and casualty reinsurers associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Gallagher RE tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most property and casualty reinsurers?

London leads with 45 company records, followed by City Of London (4) and Brantham Manningtree (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,241 professional contacts with verified work emails tracked across these 59 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.