Company lists · Data refreshed September 2026

Top 25 Actuary firms based in London, United Kingdom

Name: Actuary firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 152 companies tracked

RevenueBase identified 152 actuary firms headquartered in London, United Kingdom as of September 2026 and tracks 9,094 professional contacts across them, including 4,956 with verified work emails and 820 with mobile numbers. London is the largest hub.

This list covers actuary firms 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 23, 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 23, 2026 86% judged on-target in blind review

152Companies

9,094Contacts tracked

4,956Verified emails

820Mobile numbers

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The 25 largest actuary firms based in London, United Kingdom

Ranked by team size

Top 25 of 152 actuary firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to actuary firms: 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	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	1,001-5,000	2,183 contacts →
	Indirect evidence “Howden Insurance Brokers Ltd is a leading provider of insurance broking, risk consulting, and employee benefits advice.” Source: RevenueBase Database · checked Sep 23, 2026
2	Aptia Group	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	1,001-5,000	1,892 contacts →
	Indirect evidence “Founded to shape the future of pensions, health, and insurance solutions, Aptia is a leading professional services firm dedicated to simplifying complexity for businesses and…” Source: RevenueBase Database · checked Sep 23, 2026
3	Barnett Waddingham	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	1,001-5,000	1,331 contacts →
	Indirect evidence “We are a leading UK professional services consultancy at the forefront of risk, pensions, investment and insurance.” Source: RevenueBase Database · checked Sep 23, 2026
4	Broadstone	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	501-1,000	497 contacts →
	Indirect evidence “Broadstone is a leading, independent UK consultancy delivering expert advice to employers, insurers, pension scheme trustees and lenders.” Source: RevenueBase Database · checked Sep 23, 2026
5	Institute And Faculty Of Actuaries	Strong evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	411 contacts →
	Strong evidence “The Institute and Faculty of Actuaries (IFoA) is the UK's only chartered professional body dedicated to educating, developing and regulating actuaries based both in the UK and…” Source: RevenueBase Database · checked Sep 23, 2026
6	Mercer UK	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	10001+	329 contacts →
	Indirect evidence “At Mercer, A Marsh business, we’re helping our clients realize their investment objectives, shape the future of work, and enhance health and retirement outcomes for their people.” Source: RevenueBase Database · checked Sep 23, 2026
7	Howden Tiger	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	141 contacts →
	Indirect evidence “The global reinsurance broker and risk, capital, & strategic advisor focused on relentless innovation & superior analytics for top client service.” Source: RevenueBase Database · checked Sep 23, 2026
8	HFG Insurance Recruitment	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	11-50	128 contacts →
	Indirect evidence “HFG is a leading international recruitment consulting firm that provides specialist professionals to leading General Insurance, Life, Reinsurance, Pensions and Management…” Source: RevenueBase Database · checked Sep 23, 2026
9	Sackers	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	119 contacts →
	Indirect evidence “Sackers is the UK's leading commercial law firm for pension scheme trustees, employers, corporate investors and providers.” Source: RevenueBase Database · checked Sep 23, 2026
10	JLT Specialty	Indirect evidence	London, United KingdomHQ checked Sep 23, 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 23, 2026
11	APR	Strong evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	88 contacts →
	Strong evidence “Founded in 2006, APR provide actuarial consulting and secondment services to over 45 life and general insurers, as well as other financial sector clients, across the UK, Ireland…” Source: RevenueBase Database · checked Sep 23, 2026
12	Arthur Recruitment	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	68 contacts →
	Indirect evidence “Arthur is a specialist search and recruitment consultancy for the insurance industry.” Source: RevenueBase Database · checked Sep 23, 2026
13	Axco Insurance Information	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	67 contacts →
	Indirect evidence “Axco is the leading supplier of global insurance and employee benefits market information.” Source: RevenueBase Database · checked Sep 23, 2026
14	Milliman UK	Strong evidence	London, United KingdomHQ checked Sep 23, 2026	1,001-5,000	56 contacts →
	Strong evidence “Milliman is among the world’s largest independent actuarial and consulting firms.” Source: RevenueBase Database · checked Sep 23, 2026
15	Lloyd & Partners Limited	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	201-500	55 contacts →
	Indirect evidence “We provide industry-focused consulting, brokerage, and claims advocacy services, and leverage data, technology, and analytics to help reduce our clients’ total cost of risk.” Source: RevenueBase Database · checked Sep 23, 2026
16	Club Vita	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	51 contacts →
	Indirect evidence “Club Vita is an independent longevity data analytics company, which facilitates the accumulation and pooling of data underlying the longevity patterns of retirees with annuity…” Source: RevenueBase Database · checked Sep 23, 2026
17	Arthur J. Gallagher For Propertymark Members	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	n/a	49 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
18	Beach & Associates	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	51-200	49 contacts →
	Indirect evidence “As of December 2020, Beach & Associates rebranded to Acrisure Re and Acrisure London Wholesale.” Source: RevenueBase Database · checked Sep 23, 2026
19	Alchemy Underwriting	Indirect evidence	London, United KingdomHQ checked Sep 23, 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 23, 2026
20	Nigel Sloam & CO	Strong evidence	London, United KingdomHQ checked Sep 23, 2026	11-50	35 contacts →
	Strong evidence “We are an independent firm of actuaries and consultants, founded in 1979.” Source: RevenueBase Database · checked Sep 23, 2026
21	ARC Pensions LAW	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	11-50	33 contacts →
	Indirect evidence “Arc Pensions Law is the leading firm of specialist pensions lawyers.” Source: RevenueBase Database · checked Sep 23, 2026
22	C. Lewis & Company	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	11-50	32 contacts →
	Indirect evidence “We are an independent specialist international forensic accounting firm focused on providing services to clients in the insurance industry and for litigation support / dispute…” Source: RevenueBase Database · checked Sep 23, 2026
23	WPR	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	11-50	29 contacts →
	Indirect evidence “WPR is an award winning recruitment agency founded in 2016.” Source: RevenueBase Database · checked Sep 23, 2026
24	Ainsurco	Strong evidence	London, United KingdomHQ checked Sep 23, 2026	11-50	28 contacts →
	Strong evidence “AInsurCo \| Actuarial & Insurance Consulting \| Technology-Enabled Insurance Solutions AInsurCo is a specialist insurance consulting and technology firm helping insurers unlock…” Source: RevenueBase Database · checked Sep 23, 2026
25	Greenkite Bcorp	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	11-50	27 contacts →
	Indirect evidence “GK Associates and GK Ignite together form a mature, purposefully structured group of professional services businesses serving the insurance market.” Source: RevenueBase Database · checked Sep 23, 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: actuary firms. 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 actuary firms.
Partial evidence: Its own public description names part of actuary firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name actuary firms. 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 152 actuary firms based in London, United Kingdom

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Actuary firms based in London, United Kingdom at a glance

As of Sep 23, 2026

54.5%Verified-email coverage

9.0%Mobile-number coverage

59.8Average contacts per company

1-10Median size (employees)

89.5%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

3,6820–30

1,21331–60

4861–90

690–180

7180+

Company record updated

Median 75.0d

00–30

1,01231–60

5,58561–90

1,95690–180

541180+

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 actuary firms, 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 “actuary firms”. 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 actuary firms), 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 actuary firms, 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, 4,956 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 23, 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.

Actuary firms by metro in the United Kingdom

Actuary firms in London136

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 actuary firms, 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 actuary firms are there based in London, United Kingdom?

RevenueBase identified 152 actuary firms 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 actuary firms?

London leads with 136 headquartered companies, followed by Edinburgh (5) and Manchester (5).

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 4,956 verified decision-maker contacts tracked across these 152 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 23, 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.