Company lists · Data refreshed September 2026

Top 25 Professional associations based in the United Kingdom

Name: Professional associations 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 184 companies tracked

RevenueBase identified 184 professional associations headquartered in the United Kingdom as of September 2026 and tracks 6,583 professional contacts across them, including 2,222 with verified work emails. London is the largest hub.

This list covers professional associations 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

184Companies

6,583Contacts tracked

2,222Verified emails

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The 25 largest professional associations based in the United Kingdom

Ranked by team size

Top 25 of 184 professional associations 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 professional associations: 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	General Medical Council	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	1,870 contacts →
	Indirect evidence “We work with doctors, physician associates (PAs), anaesthesia associates (AAs), those they care for and other stakeholders to support good, safe patient care across the UK.” Source: RevenueBase Database · checked Sep 20, 2026
2	Medical Protection Society	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	786 contacts →
	Partial evidence “The Medical Protection Society Limited (“MPS”) is the world’s leading protection organisation for doctors, dentists and healthcare professionals.” Source: RevenueBase Database · checked Sep 20, 2026
3	Chartered Insurance Institute	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	390 contacts →
	Partial evidence “We are a professional body dedicated to building public trust in the insurance and financial planning professions, with members living and working in more than 150 countries…” Source: RevenueBase Database · checked Sep 20, 2026
4	The MDU	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	355 contacts →
	Indirect evidence “The MDU, and our specialist dental division, the DDU, is a not-for-profit organisation wholly dedicated to our members’ interests.” Source: RevenueBase Database · checked Sep 20, 2026
5	Faculty Of Advocates	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	501-1,000	342 contacts →
	Indirect evidence “The Faculty of Advocates ensures that the people of Scotland, regardless of wealth, background or location, have access to the very best independent, objective legal advice.” Source: RevenueBase Database · checked Sep 20, 2026
6	Royal College Of Occupational Therapists	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	162 contacts →
	Indirect evidence “We're RCOT, the Royal College of Occupational Therapists.” Source: RevenueBase Database · checked Sep 20, 2026
7	Royal College Of Pathologists Rcpath	Indirect evidence	Aldgate, United KingdomHQ checked Sep 20, 2026	51-200	151 contacts →
	Indirect evidence “Pathology is the science at the heart of modern medicine, vital for the diagnosis and clinical management of disease.” Source: RevenueBase Database · checked Sep 20, 2026
8	OLD Square Chambers	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	99 contacts →
	Indirect evidence “A specialist set with 85 members, including 21 King's Counsel, Old Square Chambers is a leading civil set with modern, innovative and approachable counsel clerked by a…” Source: RevenueBase Database · checked Sep 20, 2026
9	British Association Of Social Workers	Strong evidence	Birmingham, United KingdomHQ checked Sep 20, 2026	51-200	89 contacts →
	Strong evidence “BASW is the largest professional association for social workers in the UK, with offices in England, Northern Ireland, Scotland and Wales.” Source: RevenueBase Database · checked Sep 20, 2026
10	Personal Finance Society	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	63 contacts →
	Partial evidence “The Personal Finance Society (PFS) is the pre-eminent professional membership body for financial planners and those in related roles.” Source: RevenueBase Database · checked Sep 20, 2026
11	Resolution	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	58 contacts →
	Partial evidence “Resolution’s 6,500 members are family lawyers, mediators and other professionals committed to the constructive resolution of divorce, separation and family disputes.” Source: RevenueBase Database · checked Sep 20, 2026
12	Science Council	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	49 contacts →
	Partial evidence “The Science Council promotes understanding of the role and importance of scientists and the science community by working collectively with professional bodies and learned…” Source: RevenueBase Database · checked Sep 20, 2026
13	Association Of Photographers	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	n/a	42 contacts →
	Partial evidence “Protect - Promote - Inspire The Association of Photographers was first formed in 1968 as the Association of Fashion and Advertising Photographers and is one of the most…” Source: RevenueBase Database · checked Sep 20, 2026
14	Physio First	Indirect evidence	Northampton, United KingdomHQ checked Sep 20, 2026	n/a	39 contacts →
	Indirect evidence “At Physio First, we support physiotherapists at every stage of private practice, from setting up a clinic to running, growing and scaling an established business.” Source: RevenueBase Database · checked Sep 20, 2026
15	British Security Industry Association Bsia	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	38 contacts →
	Partial evidence “The British Security Industry Association is the trade association for the private security industry in the UK.” Source: RevenueBase Database · checked Sep 20, 2026
16	Employment Lawyers Association ELA	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	n/a	36 contacts →
	Partial evidence “The Employment Lawyers Association (ELA) is an apolitical organisation representing the views and interests of just under 7,300 specialist, qualified employment lawyers in the UK.” Source: RevenueBase Database · checked Sep 20, 2026
17	Icaew Regulation And Conduct	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 20, 2026	51-200	34 contacts →
	Indirect evidence “ICAEW is a world-leading improvement regulator We act in the public interest by making sure ICAEW firms, members, students and affiliates maintain the standards expected by the…” Source: RevenueBase Database · checked Sep 20, 2026
18	Independent Doctors Federation	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	31 contacts →
	Indirect evidence “The Independent Doctors’ Federation (IDrF) represents doctors in private practice through education, networking, appraisal, revalidation and regulatory advice.” Source: RevenueBase Database · checked Sep 20, 2026
19	Memberwise Network	Strong evidence	Birmingham, United KingdomHQ checked Sep 20, 2026	1-10	26 contacts →
	Strong evidence “The MemberWise Network the leading independent and free to join professional network of membership and association professionals dedicated to promoting good practice and…” Source: RevenueBase Database · checked Sep 20, 2026
20	Babtac & Cibtac	Partial evidence	Gloucester, United KingdomHQ checked Sep 20, 2026	11-50	24 contacts →
	Partial evidence “BABTAC - the British Association of Beauty Therapy & Cosmetology - is the longest established and most widely recognised UK membership organisation in the aesthetics, beauty, hair…” Source: RevenueBase Database · checked Sep 20, 2026
21	Nalp National Association Of Licensed Paralegals	Partial evidence	Aberystwyth, United KingdomHQ checked Sep 20, 2026	1-10	24 contacts →
	Partial evidence “NALP has been promoting paralegals since 1987 and is the longest running professional paralegal body in the UK NALP strives to ensure that our members are recognised as a key part…” Source: RevenueBase Database · checked Sep 20, 2026
22	IRRV	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	22 contacts →
	Partial evidence “A key aim of the Institute is to support its members’ professional and personal development and the sharing of best practice.” Source: RevenueBase Database · checked Sep 20, 2026
23	Manchester LAW Society	Indirect evidence	Manchester, United KingdomHQ checked Sep 20, 2026	1-10	21 contacts →
	Indirect evidence “We are one of the largest and most active membership organisations in the country, for lawyers and their fee earners, with some members.” Source: RevenueBase Database · checked Sep 20, 2026
24	Hmca Members	Strong evidence	Knaresborough, United KingdomHQ checked Sep 20, 2026	11-50	19 contacts →
	Strong evidence “Hospital and Medical Care Association is a specialist in offering health benefits exclusively to members of professional & trades associations and membership groups.” Source: RevenueBase Database · checked Sep 20, 2026
25	Medical Defence Shield LTD	Partial evidence	Bedford, United KingdomHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Medical Defence Shield is a medical defence organisation which plays a vital role in safeguarding the legal & professional interests of healthcare professionals including doctors…” 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: professional associations. 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 professional associations.
Partial evidence: Its own public description names part of professional associations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name professional associations. 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 184 professional associations based in the United Kingdom

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Professional associations based in the United Kingdom at a glance

As of Sep 20, 2026

33.8%Verified-email coverage

35.8Average contacts per company

1-10Median size (employees)

39.7%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

107

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 184 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 professional associations, 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 “professional associations”. 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 professional associations), 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 professional associations, 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, 2,222 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.

Professional associations by metro

Professional associations in London73

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 professional associations, 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 professional associations are there based in the United Kingdom?

RevenueBase identified 184 professional associations 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?

General Medical Council, headquartered in London, tops this list with the largest team on record.

Which city has the most professional associations?

London leads with 73 headquartered companies, followed by Birmingham (4) and Glasgow (4).

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 2,222 verified decision-maker contacts tracked across these 184 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.