Company lists · Data refreshed November 2026

Top 25 Underwriting managers based in the United Kingdom

RevenueBase identified 307 company matches for underwriting managers associated with the United Kingdom as of November 2026 and tracks 8,076 professional contacts across them, including 4,320 with verified work emails. London is the largest hub.

This list covers company matches for underwriting managers 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 November 6, 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 Nov 6, 2026 How this list was built
307Companies
8,076Contacts tracked
4,320Verified emails
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The 25 largest underwriting managers based in the United Kingdom

Ranked by team size
Top 25 of 307 company matches for underwriting managers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchSevenoaks, United KingdomHQ recorded Nov 6, 20261,001-5,0001,519 contacts →

Exact match

“Markerstudy Insurance Services Limited (MISL) is one of the largest Managing General Agents in the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500243 contacts →

Exact match

“Asta is the leading third party managing agent at Lloyd's and our principal activity is the start-up and management of Lloyd's syndicates.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon Ec3m 5bn, United KingdomHQ recorded Nov 6, 2026201-500220 contacts →

Exact match

“Newline Group is a market leading specialty insurance group that operates through three underwriting platforms: Newline Syndicate 1218 at Lloyd’s, Newline Insurance Company…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200203 contacts →

Exact match

“Rokstone is one of the world’s largest MGAs, with offices in the UK, Europe, USA, Asia, Africa and the Middle East.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500190 contacts →

Exact match

“Argenta Holdings Ltd, a wholly owned subsidiary of Hannover Re, is an underwriting and insurance services group operating in the Lloyd’s Market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000190 contacts →

Exact match

“DUAL is driven by a mission to be the MGA of choice for brokers, clients and carriers, through the provision of deep underwriting expertise and global distribution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500163 contacts →

Exact match

“Founded in 2008 and based in London, UK, the Nexus Group is a leading, independent, specialty Managing General Agent (MGA) group with a focus on niche insurance classes of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200136 contacts →

Exact match

“We are the leading insurance platform trusted by world-class insurers to navigate complex risks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000126 contacts →

Exact match

“A chartered MGA and Lloyd’s cover holder, Geo Underwriting is a UK Commercial MGA specialising in tailored insurance solutions catering to non-standard and niche requirements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200114 contacts →

Exact match

“Eaton Gate is an independent and long term sustainable business focussed on attracting and retaining the best talent available.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,000107 contacts →

Exact match

“Specialist Risk Group (SRG) is a group of specialist insurance intermediaries supporting businesses and individuals with complex insurance requirements across the UK, Europe and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200102 contacts →

Exact match

“Optio Group is a global specialist Managing General Agent (MGA) with presence across UK, USA, South America, Europe, Asia and MENA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchEgerton, United KingdomHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Broker Direct Plc was founded in 1997 with a unique proposition, the establishment of a general insurance and claims management operation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“Specialist MGA providing quality products for niche commercial markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchManchester, United KingdomHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“Ripe is a leading UK digital MGA delivering tailored insurance solutions to specialist customer groups.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBingley, United KingdomHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“NBS Underwriting is an MGA specialising in delivering 40 competitive and market-leading insurance products in the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“The Lloyd’s Market Association (LMA) exists at the very heart of Lloyd’s, a world-leading global marketplace for complex risk where solutions to challenges are delivered every day.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchOxford, United KingdomHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Imaginera builds next-generation underwriting systems that empower insurance, reinsurance, ILS and broker teams through the creative application of technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLeeds, United KingdomHQ recorded Nov 6, 2026201-50069 contacts →

Exact match

“The Bspoke Group brings together a collection of multi-class niche and specialist MGA insurance businesses, backed by 'A' rated insurers and combining a depth of product expertise…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5068 contacts →

Exact match

“Decus Insurance Brokers Ltd are a London based Wholesale Broker, a subsidiary under Bridge Specialty Group and were established by Brown & Brown in 2008.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAldgate, United KingdomHQ recorded Nov 6, 202651-20066 contacts →

Exact match

“Bowood, Howden's specialist delegated binding authority division, is the largest broker of its kind to Lloyd's.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5065 contacts →

Exact match

“Our model is built around underwriting excellence, driven by rigorous risk selection, innovative, intelligent underwriting and catastrophe modelling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Citynet Insurance Brokers is a wholesale Lloyd’s broker specialising in the placement of commercial business into the London market on behalf of UK intermediaries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchDudley, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Commercial Express is one of the UK’s leading Managing General Agents (MGA), providing specialist insurance solutions to brokers nationwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchGreat Notley, United KingdomHQ recorded Nov 6, 202651-20058 contacts →

Exact match

“Welcome to DOA, an independent, family-run Insurance Intermediary specialising in underwriting insurance products across niche market sectors throughout the UK since 1996.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 307 underwriting managers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,320 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwriting managers based in the United Kingdom at a glance

As of Nov 6, 2026
53.5%Verified-email coverage
26.3Average contacts per company
11-50Median size (employees)
60.9%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
117
11-50
119
51-200
47
201-500
11
501-1,000
6
1,001-5,000
2
5,001-10,000
1
10001+
1

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 307 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 “underwriting managers” 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 4,320 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 November 6, 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.

Underwriting managers by metro

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 “underwriting managers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwriting managers are there based in the United Kingdom?

RevenueBase identified 307 company matches for underwriting managers associated with the United Kingdom as of November 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?

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

Which city has the most underwriting managers?

London leads with 187 company records, followed by Manchester (6) and Bristol (5).

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 4,320 professional contacts with verified work emails tracked across these 307 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 November 6, 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.