Company lists · Data refreshed September 2026

Top 25 Construction insurance underwriters based in the United Kingdom

Name: Construction 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 16, 2026 135 companies tracked

RevenueBase identified 135 construction insurance underwriters headquartered in the United Kingdom as of September 2026 and tracks 8,663 professional contacts across them, including 3,836 with verified work emails. London is the largest hub.

This list covers construction 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 16, 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 16, 2026 86% judged on-target in blind review

135Companies

8,663Contacts tracked

3,836Verified emails

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The 25 largest construction insurance underwriters based in the United Kingdom

Ranked by team size

Top 25 of 135 construction insurance underwriters based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to construction 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	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	2,564 contacts →
	Indirect 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 16, 2026
2	QBE Europe	Indirect evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
3	NHBC	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,231 contacts →
	Partial evidence “We are the UK’s leading independent provider of warranty and insurance for new homes.” Source: RevenueBase Database · checked Sep 16, 2026
4	HSB UK And Ireland	Partial evidence	Manchester, United KingdomHQ checked Sep 16, 2026	501-1,000	445 contacts →
	Partial evidence “HSB - a Munich Re company - is a leading specialist engineering and technology insurance and engineering inspection services provider.” Source: RevenueBase Database · checked Sep 16, 2026
5	Newline Group	Partial evidence	London Ec3m 5bn, United KingdomHQ checked Sep 16, 2026	201-500	215 contacts →
	Partial 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 16, 2026
6	Aventum Group	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	168 contacts →
	Partial evidence “We are a global (re)insurance group that operates across both the underwriting and broking sectors.” Source: RevenueBase Database · checked Sep 16, 2026
7	Miles Smith	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	104 contacts →
	Partial 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 16, 2026
8	M&dh Insurance Services LTD	Strong evidence	Bedford, United KingdomHQ checked Sep 16, 2026	51-200	104 contacts →
	Strong evidence “M & DH are the specialist in all forms of construction and manufacturing insurance.” Source: RevenueBase Database · checked Sep 16, 2026
9	Alesco Risk Management Services	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	102 contacts →
	Strong evidence “Alesco is a fast-growing and dynamic insurance broker that specialises in energy, construction, terrorism, alternative risk transfer, property, liability and related lines of…” Source: RevenueBase Database · checked Sep 16, 2026
10	Moorhouse Group	Indirect evidence	Mid Glamorgan, United KingdomHQ checked Sep 16, 2026	51-200	66 contacts →
	Indirect evidence “Moorhouse Group has recently been acquired by the exciting Lucida Group with our Managing Director, Linda Haggett, leading us forward.” Source: RevenueBase Database · checked Sep 16, 2026
11	Imaginera	Partial evidence	Oxford, United KingdomHQ checked Sep 16, 2026	51-200	62 contacts →
	Partial 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 16, 2026
12	Global Insurance Management	Partial evidence	Coventry, United KingdomHQ checked Sep 16, 2026	51-200	49 contacts →
	Partial evidence “Global Insurance Management is a premier provider of comprehensive warranties, insurance solutions, and underwriting expertise.” Source: RevenueBase Database · checked Sep 16, 2026
13	Alchemy Underwriting	Indirect evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
14	Medical & Commercial International Limited	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	37 contacts →
	Indirect evidence “Medical & Commercial International (MCI) specialises in underwriting international liability risks.” Source: RevenueBase Database · checked Sep 16, 2026
15	City & Commercial Insurance Group	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	31 contacts →
	Partial evidence “C&C Insurance Group provides reinsurance and insurance solutions from nine locations globally and is regulated in the UK, Guernsey, Bermuda and the Seychelles.” Source: RevenueBase Database · checked Sep 16, 2026
16	Aspect	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	28 contacts →
	Partial evidence “Re)insurance for tougher risks.” Source: RevenueBase Database · checked Sep 16, 2026
17	LBB London Belgravia	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	27 contacts →
	Indirect evidence “The latent defects market has become broker-led.” Source: RevenueBase Database · checked Sep 16, 2026
18	Matrix Global Services	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	26 contacts →
	Partial evidence “At Matrix Global, we combine deep insurance expertise with capital markets insight to deliver Structured Insurance & Financial Risk Transfer solutions.” Source: RevenueBase Database · checked Sep 16, 2026
19	Navium Marine Limited	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
20	Trade Direct Insurance Services LTD	Strong evidence	Godalming, United KingdomHQ checked Sep 16, 2026	11-50	23 contacts →
	Strong evidence “Trade Direct Insurance Services Ltd is a leading provider of exclusive insurance policies to the Tradesman and Construction industries.” Source: RevenueBase Database · checked Sep 16, 2026
21	Renovation Underwriting	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	22 contacts →
	Partial evidence “As an MGA, we provide contract works solutions for the Commercial and HNW sectors to Private Client and Commercial Insurance Brokers.” Source: RevenueBase Database · checked Sep 16, 2026
22	Amphitrite Underwriting Limited	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “We are a specialist marine insurance underwriting agency located in the City of London, and market leaders for marine insurance products which provide innovative, bespoke and…” Source: RevenueBase Database · checked Sep 16, 2026
23	Blackhawk Insurance Services Limited	Strong evidence	Westcliff On Sea, United KingdomHQ checked Sep 16, 2026	11-50	19 contacts →
	Strong evidence “Blackhawk Insurance Services Limited is widely considered to be one of the leading Insurance Intermediaries in the construction sector.” Source: RevenueBase Database · checked Sep 16, 2026
24	Fenchurch Insurance Brokers	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	18 contacts →
	Strong evidence “Fenchurch Insurance Brokers are a leading insurance broker to the construction sector.” Source: RevenueBase Database · checked Sep 16, 2026
25	Daulby Read Insurance Brokers LTD	Indirect evidence	Chester, United KingdomHQ checked Sep 16, 2026	11-50	17 contacts →
	Indirect evidence “Providing independent, specilaist advice and risk management solutions to a wide range of commercial and corporate clients.” Source: RevenueBase Database · checked Sep 16, 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: construction 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 construction insurance underwriters.
Partial evidence: Its own public description names part of construction insurance underwriters, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name construction 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 135 construction insurance underwriters based in the United Kingdom

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Construction insurance underwriters based in the United Kingdom at a glance

As of Sep 16, 2026

44.3%Verified-email coverage

64.2Average contacts per company

11-50Median size (employees)

44.4%Largest-city concentration · London

Sep 16, 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 135 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 construction 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 “construction 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 construction 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 construction 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, 3,836 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 16, 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.

Construction insurance underwriters by metro

Construction insurance underwriters in London60

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 construction 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 construction insurance underwriters are there based in the United Kingdom?

RevenueBase identified 135 construction 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 construction insurance underwriters?

London leads with 60 headquartered companies, followed by Manchester (4) and Coventry (3).

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 3,836 verified decision-maker contacts tracked across these 135 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 16, 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.