Company lists · Data refreshed September 2026

Top 25 Marine insurance brokers based in the United Kingdom

Name: Marine insurance brokers 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 492 companies tracked

RevenueBase identified 492 marine insurance brokers headquartered in the United Kingdom as of September 2026 and tracks 9,559 professional contacts across them, including 3,943 with verified work emails. London is the largest hub.

This list covers marine insurance brokers 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

492Companies

9,559Contacts tracked

3,943Verified emails

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The 25 largest marine insurance brokers based in the United Kingdom

Ranked by team size

Top 25 of 492 marine insurance brokers 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 marine insurance brokers: 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	Clarksons	Partial evidence	St. Katharine Docks, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,343 contacts →
	Partial evidence “Clarksons is at the heart of maritime global shipping.” Source: RevenueBase Database · checked Sep 17, 2026
2	Howden, The NEW Name For Aston Lark	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	672 contacts →
	Partial evidence “In April 2022, Aston Lark became part of the Howden Group, with the aim of creating a standout full-service broker, unrivalled in its quality, scale and reach in the UK and…” Source: RevenueBase Database · checked Sep 17, 2026
3	Northstandard	Indirect evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 17, 2026	501-1,000	584 contacts →
	Indirect evidence “The home of NorthStandard updates.” Source: RevenueBase Database · checked Sep 17, 2026
4	SSY	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	449 contacts →
	Indirect evidence “At SSY, we believe that experience matters.” Source: RevenueBase Database · checked Sep 17, 2026
5	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
6	Griffiths & Armour, An AON Company	Strong evidence	Liverpool, United KingdomHQ checked Sep 17, 2026	51-200	188 contacts →
	Strong evidence “Griffiths & Armour, an Aon company, is a chartered insurance broker that exists to make your world less uncertain.” Source: RevenueBase Database · checked Sep 17, 2026
7	Rokstone Underwriting	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	180 contacts →
	Indirect evidence “Rokstone is one of the world’s largest MGAs, with offices in the UK, Europe, USA, Asia, Africa and the Middle East.” Source: RevenueBase Database · checked Sep 17, 2026
8	Clegg Gifford	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	175 contacts →
	Strong evidence “We are a dynamic Lloyd's broker who arrange insurance for private individuals and commercial ventures alike.” Source: RevenueBase Database · checked Sep 17, 2026
9	W K Webster And CO LTD	Partial evidence	Sidcup, United KingdomHQ checked Sep 17, 2026	201-500	140 contacts →
	Partial evidence “Since 1861, W K Webster & Co Ltd has built up an impressive reputation for excellence in the field of marine & transit claims consultancy worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
10	TL Dallas & CO LTD	Partial evidence	Bradford, United KingdomHQ checked Sep 17, 2026	51-200	131 contacts →
	Partial evidence “Established in 1919 by an enterprising Scotsman, Thomas Lessels Dallas OBE, TL Dallas has a long and distinguished heritage, providing unparalleled insurance and risk solutions to…” Source: RevenueBase Database · checked Sep 17, 2026
11	BESSO	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	129 contacts →
	Strong evidence “We are a long-established Lloyd’s broker whose origins date back to the Besso family, an accomplished name in Italian insurance.” Source: RevenueBase Database · checked Sep 17, 2026
12	Bridge Insurance Brokers Limited	Strong evidence	Manchester, United KingdomHQ checked Sep 17, 2026	51-200	122 contacts →
	Strong evidence “Bridge Insurance Brokers Limited (Bridge) is a leading independent corporate insurance broker with offices in both Manchester and London.” Source: RevenueBase Database · checked Sep 17, 2026
13	C&c Insurance Brokers Limited	Partial evidence	Stockport, United KingdomHQ checked Sep 17, 2026	51-200	96 contacts →
	Partial evidence “Established as an Independent Broker since 1975 operating from offices in Bristol, Cardiff, Cheshire, Chester, Leeds, London, Manchester, the Midlands and Scotland, we are one of…” Source: RevenueBase Database · checked Sep 17, 2026
14	Broker Direct PLC	Strong evidence	Egerton, United KingdomHQ checked Sep 17, 2026	51-200	95 contacts →
	Strong evidence “Broker Direct Plc was founded in 1997 with a unique proposition, the establishment of a general insurance and claims management operation.” Source: RevenueBase Database · checked Sep 17, 2026
15	Consilium Insurance Brokers	Strong evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
16	Waves Group LTD	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	84 contacts →
	Partial evidence “Waves Group combines the expertise of Cwaves and Mwaves as leading, independent marine consultants to the shipping and offshore energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
17	TT Club	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	80 contacts →
	Partial evidence “TT Club is the international transport and logistics industry’s leading provider of insurance and related risk management services.” Source: RevenueBase Database · checked Sep 17, 2026
18	Citynet Insurance Brokers	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	71 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
19	SJL Insurance Services	Strong evidence	Worcester, United KingdomHQ checked Sep 17, 2026	51-200	71 contacts →
	Strong evidence “SJL Insurance Services is a commercial business Insurance Broker that provides a high-quality service to a national and international client base.” Source: RevenueBase Database · checked Sep 17, 2026
20	Think Insurance	Strong evidence	Walsall, United KingdomHQ checked Sep 17, 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 17, 2026
21	Preston Turnbull LLP	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	60 contacts →
	Strong evidence “Preston Turnbull is a specialised shipping and marine insurance law firm, set up in October 2019 following a breakaway from an international firm.” Source: RevenueBase Database · checked Sep 17, 2026
22	Berkeley Insurance Group UK LTD	Strong evidence	Leicester, United KingdomHQ checked Sep 17, 2026	51-200	59 contacts →
	Strong evidence “With a heritage dating from the 1920’s, Berkeley Insurance Group is now one of the UK’s largest privately owned insurance brokers.” Source: RevenueBase Database · checked Sep 17, 2026
23	Crispin Speers & Partners Limited	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	58 contacts →
	Strong evidence “Crispin Speers & Partners (CSP) is a leading specialty and niche Lloyd’s insurance and reinsurance broker providing tailor-made solutions for both UK and international clients.” Source: RevenueBase Database · checked Sep 17, 2026
24	Shepherd Compello	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	57 contacts →
	Strong evidence “Shepherd Compello Ltd (based in London, UK) and Shepherd Compello B.V.(based in Assen, Netherlands) are both fully accredited Lloyd's Insurance Brokers and Coverholders.” Source: RevenueBase Database · checked Sep 17, 2026
25	Hayes Parsons Insurance Brokers	Strong evidence	Bristol, United KingdomHQ checked Sep 17, 2026	51-200	47 contacts →
	Strong evidence “Hayes Parsons Insurance Brokers is an independent Chartered Insurance Broker specialising in commercial and marine insurance.” 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: marine insurance brokers. 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 marine insurance brokers.
Partial evidence: Its own public description names part of marine insurance brokers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine insurance brokers. 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 492 marine insurance brokers based in the United Kingdom

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Marine insurance brokers based in the United Kingdom at a glance

As of Sep 17, 2026

41.2%Verified-email coverage

19.4Average contacts per company

11-50Median size (employees)

34.8%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

220

11-50

181

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 492 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 marine insurance brokers, 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 “marine insurance brokers”. 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 marine insurance brokers), 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 marine insurance brokers, 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, 3,943 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.

Marine insurance brokers by metro

Marine insurance brokers in London171

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 marine insurance brokers, 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 marine insurance brokers are there based in the United Kingdom?

RevenueBase identified 492 marine insurance brokers 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?

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

Which city has the most marine insurance brokers?

London leads with 171 headquartered companies, followed by Liverpool (8) and Manchester (8).

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 3,943 verified decision-maker contacts tracked across these 492 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.