Company lists · Data refreshed September 2026

Top 25 Business insurance brokers based in London, United Kingdom

Name: Business insurance brokers based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 214 companies tracked

RevenueBase identified 214 business insurance brokers headquartered in London, United Kingdom as of September 2026 and tracks 11,899 professional contacts across them, including 6,001 with verified work emails. London is the largest hub.

This list covers business insurance brokers headquartered in London, 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

214Companies

11,899Contacts tracked

6,001Verified emails

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The 25 largest business insurance brokers based in London, United Kingdom

Ranked by team size

Top 25 of 214 business insurance brokers based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to business 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	Howden Insurance Brokers Limited	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	2,183 contacts →
	Strong evidence “Howden Insurance Brokers Ltd is a leading provider of insurance broking, risk consulting, and employee benefits advice.” Source: RevenueBase Database · checked Sep 16, 2026
2	Miller Insurance Services LLP	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,040 contacts →
	Indirect evidence “Our reputation as the finest advocates in the business comes from our exceptional people delivering exceptional results for over 120 years.” Source: RevenueBase Database · checked Sep 16, 2026
3	Simply Business	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	848 contacts →
	Partial evidence “Simply Business is dedicated to making small business insurance simple and accessible.” Source: RevenueBase Database · checked Sep 16, 2026
4	Marsh Commercial	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	766 contacts →
	Partial evidence “Marsh Commercial, a Marsh business, is the SME and mid market specialist providing tailored commercial insurance placements and comprehensive end-to-end risk management.” Source: RevenueBase Database · checked Sep 16, 2026
5	Brown & Brown UK	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	690 contacts →
	Partial evidence “No matter where you are on your growth journey, we can help you find solutions to meet your ever-evolving insurance and risk management needs.” Source: RevenueBase Database · checked Sep 16, 2026
6	Howden, The NEW Name For Aston Lark	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
7	Mcgill And Partners	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	566 contacts →
	Indirect evidence “Complex risk.” Source: RevenueBase Database · checked Sep 16, 2026
8	CNA Hardy	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	553 contacts →
	Partial evidence “CNA Hardy is a leading specialist commercial insurance provider for clients within the Lloyd’s and company markets.” Source: RevenueBase Database · checked Sep 16, 2026
9	PIB Insurance Brokers	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	498 contacts →
	Strong evidence “PIB Insurance Brokers (PIB) are a leading insurance broker with access to risk management services.” Source: RevenueBase Database · checked Sep 16, 2026
10	United Insurance Brokers Limited	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	229 contacts →
	Strong evidence “United Insurance Brokers Limited (UIBL) is an integral part of one of the largest privately-owned independent international insurance and reinsurance brokers headquartered in…” Source: RevenueBase Database · checked Sep 16, 2026
11	James Hallam	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	224 contacts →
	Strong evidence “James Hallam are one of the UK’s leading, fully independent, brokers and have a reputation for providing superior risk advice and insurance management programmes.” Source: RevenueBase Database · checked Sep 16, 2026
12	Jensten	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	203 contacts →
	Partial evidence “Jensten is the connected broker of scale, delivering superior outcomes for commercial, corporate and personal clients through our advisory and service capabilities, supported by…” Source: RevenueBase Database · checked Sep 16, 2026
13	Clegg Gifford	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
14	The Oval Group	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	10001+	170 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
15	BESSO	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
16	JLT Specialty	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	n/a	91 contacts →
	Indirect evidence “As of April 1, 2019, JLT Specialty is now a part of Marsh & McLennan.” Source: RevenueBase Database · checked Sep 16, 2026
17	Consilium Insurance Brokers	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
18	Lark Group Limited	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	76 contacts →
	Partial evidence “We believe that insurance should be made to measure, and not just one size fits all.” Source: RevenueBase Database · checked Sep 16, 2026
19	Paragon Brokers	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	65 contacts →
	Strong evidence “In a world of conglomerates, corporations and umbrella organisations, Paragon shines through as a truly specialist insurance broker.” Source: RevenueBase Database · checked Sep 16, 2026
20	Crispin Speers & Partners Limited	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
21	IHC LTD	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	55 contacts →
	Strong evidence “Employee Benefits Broker specialising in Private Medical Insurance and Group Risk Insurance in the UK and for global clients.” Source: RevenueBase Database · checked Sep 16, 2026
22	Risk Management Partners	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	54 contacts →
	Partial evidence “We have been helping public sector, education and emergency service organisations across the UK with their risk management and insurance needs for over two decades.” Source: RevenueBase Database · checked Sep 16, 2026
23	Carrolls	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	41 contacts →
	Strong evidence “An independent Insurance and Reinsurance broker bringing together a wide array of market professionals under one roof.” Source: RevenueBase Database · checked Sep 16, 2026
24	Lilley Plummer Risks	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	40 contacts →
	Partial evidence “Lilley Plummer Risks Ltd (LPR) is a market-leading Lloyd’s broker operating across multiple classes of business and industry sectors.” Source: RevenueBase Database · checked Sep 16, 2026
25	Acrisure London Wholesale	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	40 contacts →
	Partial evidence “At Acrisure London Wholesale, we are committed to being the London wholesale broker of choice for small and medium-sized businesses (SMBs).” 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: business 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 business insurance brokers.
Partial evidence: Its own public description names part of business insurance brokers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business 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 214 business insurance brokers based in London, United Kingdom

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Business insurance brokers based in London, United Kingdom at a glance

As of Sep 16, 2026

50.4%Verified-email coverage

55.6Average contacts per company

11-50Median size (employees)

100.0%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 across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 214 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 business 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 London, United Kingdom whose own description of what they do matches “business 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 business 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 business insurance brokers, and records with no verified work email. Companies headquartered outside London 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, 6,001 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.

Business insurance brokers by metro in the United Kingdom

Business insurance brokers in London214
Business insurance brokers in Manchester39
Business insurance brokers in Birmingham25

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 business 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 business insurance brokers are there based in London, United Kingdom?

RevenueBase identified 214 business insurance brokers headquartered in London, 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?

Howden Insurance Brokers Limited, headquartered in London, tops this list with the largest team on record.

Which city has the most business insurance brokers?

London leads with 214 headquartered companies, followed by Manchester (39) and Birmingham (25).

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 6,001 verified decision-maker contacts tracked across these 214 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.