Company lists · Data refreshed September 2026

Top 25 Pension actuarial services firms based in the United Kingdom

Name: Pension actuarial services firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 163 companies tracked

RevenueBase identified 163 pension actuarial services firms headquartered in the United Kingdom as of September 2026 and tracks 9,225 professional contacts across them, including 5,550 with verified work emails. London is the largest hub.

This list covers pension actuarial services firms 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 20, 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 20, 2026 86% judged on-target in blind review

163Companies

9,225Contacts tracked

5,550Verified emails

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The 25 largest pension actuarial services firms based in the United Kingdom

Ranked by team size

Top 25 of 163 pension actuarial services firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to pension actuarial services 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	Aptia Group	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,892 contacts →
	Partial 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 20, 2026
2	Barnett Waddingham	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,331 contacts →
	Partial evidence “We are a leading UK professional services consultancy at the forefront of risk, pensions, investment and insurance.” Source: RevenueBase Database · checked Sep 20, 2026
3	XPS Group	Partial evidence	Reading, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,284 contacts →
	Partial evidence “XPS Group is a leading UK consulting and administration business specialising in the pensions and insurance sectors.” Source: RevenueBase Database · checked Sep 20, 2026
4	Pension Insurance Corporation PLC	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	724 contacts →
	Partial evidence “The purpose of PIC is to pay the pensions of its current and future policyholders.” Source: RevenueBase Database · checked Sep 20, 2026
5	Broadstone	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	497 contacts →
	Partial evidence “Broadstone is a leading, independent UK consultancy delivering expert advice to employers, insurers, pension scheme trustees and lenders.” Source: RevenueBase Database · checked Sep 20, 2026
6	Rothesay	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	396 contacts →
	Partial evidence “Rothesay is the UK's largest pensions insurance specialist, purpose-built to protect pension schemes and their members’ pensions.” Source: RevenueBase Database · checked Sep 20, 2026
7	First Actuarial	Strong evidence	Leeds, United KingdomHQ checked Sep 20, 2026	501-1,000	358 contacts →
	Strong evidence “First Actuarial helps trustees and employers provide the best possible pensions and employee benefits.” Source: RevenueBase Database · checked Sep 20, 2026
8	Mercer UK	Indirect evidence	London, United KingdomHQ checked Sep 20, 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 20, 2026
9	Brightwell	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	203 contacts →
	Partial evidence “Brightwell is a comprehensive service provider to UK defined benefit (DB) pension schemes.” Source: RevenueBase Database · checked Sep 20, 2026
10	Reeves	Indirect evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 20, 2026	51-200	176 contacts →
	Indirect evidence “Reeves helps successful individuals enjoy their future.” Source: RevenueBase Database · checked Sep 20, 2026
11	Lppa Pensions	Partial evidence	Preston, United KingdomHQ checked Sep 20, 2026	201-500	139 contacts →
	Partial evidence “Local Pensions Partnership Administration (LPPA) is the administration arm of LPP, based in Preston.” Source: RevenueBase Database · checked Sep 20, 2026
12	Spence & Partners Limited	Partial evidence	Belfast, United KingdomHQ checked Sep 20, 2026	51-200	122 contacts →
	Partial evidence “Simplifying Pensions with Smart Solutions and Practical Expertise At Spence, we're committed to making pensions straightforward.” Source: RevenueBase Database · checked Sep 20, 2026
13	Sackers	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	119 contacts →
	Partial evidence “Sackers is the UK's leading commercial law firm for pension scheme trustees, employers, corporate investors and providers.” Source: RevenueBase Database · checked Sep 20, 2026
14	Partnership	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	116 contacts →
	Indirect evidence “At Partnership, we see retirement differently; there is a simple belief at the heart of our business: people with health and lifestyle issues deserve a better deal.” Source: RevenueBase Database · checked Sep 20, 2026
15	Quantum Advisory	Partial evidence	Cardiff, United KingdomHQ checked Sep 20, 2026	51-200	113 contacts →
	Partial evidence “Quantum Advisory proides advice and services that help make pensions and employee benefits work better for small and medium-sized organisations.” Source: RevenueBase Database · checked Sep 20, 2026
16	APR	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	88 contacts →
	Partial 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 20, 2026
17	Retirement Advantage	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	88 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
18	Intellica LTD	Partial evidence	Liverpool, United KingdomHQ checked Sep 20, 2026	51-200	78 contacts →
	Partial evidence “Intellica is a market-leading provider of pensions data solutions, delivering technology-led services through our proprietary ecosystem, Constellation powered by OrionAI.” Source: RevenueBase Database · checked Sep 20, 2026
19	Alltrust	Partial evidence	Salisbury, United KingdomHQ checked Sep 20, 2026	11-50	69 contacts →
	Partial evidence “Alltrust Services Limited was formed in 2005 and specialises in the provision of Actuarial, Trustee and Administration Services for SIPPs and SSASs.” Source: RevenueBase Database · checked Sep 20, 2026
20	Milliman UK	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	56 contacts →
	Partial evidence “Milliman is among the world’s largest independent actuarial and consulting firms.” Source: RevenueBase Database · checked Sep 20, 2026
21	Retirement Line	Indirect evidence	Peterborough, United KingdomHQ checked Sep 20, 2026	51-200	49 contacts →
	Indirect evidence “About Retirement Line Retirement Line is the UK's largest annuity intermediary*.” Source: RevenueBase Database · checked Sep 20, 2026
22	Premier Companies UK	Partial evidence	Croydon, United KingdomHQ checked Sep 20, 2026	501-1,000	37 contacts →
	Partial evidence “If you’ve any experience of the pensions industry, chances are you think the client service is generally poor and overpriced – and that it’s mostly a constraining and bureaucratic…” Source: RevenueBase Database · checked Sep 20, 2026
23	Nigel Sloam & CO	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	35 contacts →
	Partial evidence “We are an independent firm of actuaries and consultants, founded in 1979.” Source: RevenueBase Database · checked Sep 20, 2026
24	Muse Advisory	Partial evidence	Hemel Hempstead, United KingdomHQ checked Sep 20, 2026	11-50	35 contacts →
	Partial evidence “We are a proudly independent pension consultancy; we have no ties, financial or otherwise, with any firms that provide services to trustee boards or companies.” Source: RevenueBase Database · checked Sep 20, 2026
25	ARC Pensions LAW	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	33 contacts →
	Partial evidence “Arc Pensions Law is the leading firm of specialist pensions lawyers.” Source: RevenueBase Database · checked Sep 20, 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: pension actuarial services 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 pension actuarial services firms.
Partial evidence: Its own public description names part of pension actuarial services firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pension actuarial services 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 163 pension actuarial services firms based in the United Kingdom

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Pension actuarial services firms based in the United Kingdom at a glance

As of Sep 20, 2026

60.2%Verified-email coverage

56.6Average contacts per company

1-10Median size (employees)

31.3%Largest-city concentration · London

Sep 20, 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 163 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 pension actuarial services 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 the United Kingdom whose own description of what they do matches “pension actuarial services 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 pension actuarial services 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 pension actuarial services firms, 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, 5,550 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 20, 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.

Pension actuarial services firms by metro

Pension actuarial services firms in London51

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 pension actuarial services 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 pension actuarial services firms are there based in the United Kingdom?

RevenueBase identified 163 pension actuarial services firms 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?

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

Which city has the most pension actuarial services firms?

London leads with 51 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 5,550 verified decision-maker contacts tracked across these 163 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 20, 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.