Company lists · Data refreshed September 2026

Top 25 Professional certification providers based in the United Kingdom

Name: Professional certification providers 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 85 companies tracked

RevenueBase identified 85 professional certification providers headquartered in the United Kingdom as of September 2026 and tracks 2,582 professional contacts across them, including 772 with verified work emails. London is the largest hub.

This list covers professional certification providers 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

85Companies

2,582Contacts tracked

772Verified emails

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The 25 largest professional certification providers based in the United Kingdom

Ranked by team size

Top 25 of 85 professional certification providers 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 certification providers: 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	The Knowledge Academy	Partial evidence	Bracknell, United KingdomHQ checked Sep 20, 2026	n/a	1,696 contacts →
	Partial evidence “The Knowledge Academy is a global leader in providing high-quality training and certification courses across various domains.” Source: RevenueBase Database · checked Sep 20, 2026
2	Amtivo Group	Partial evidence	West Malling, United KingdomHQ checked Sep 20, 2026	201-500	138 contacts →
	Partial evidence “Amtivo Group provides expert certification services for ISO standards, as well as training and related services.” Source: RevenueBase Database · checked Sep 20, 2026
3	Apmg International	Strong evidence	High Wycombe, United KingdomHQ checked Sep 20, 2026	51-200	132 contacts →
	Strong evidence “APMG International is a leading provider of professional certifications and best practice solutions which are available as self-study exams through APMG, or as training courses…” Source: RevenueBase Database · checked Sep 20, 2026
4	The CPD Certification Service	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	75 contacts →
	Partial evidence “Continuing Professional Development (CPD) is the term used to describe the learning activities professionals engage in to develop and enhance their abilities.” Source: RevenueBase Database · checked Sep 20, 2026
5	NSI	Partial evidence	Maidenhead, United KingdomHQ checked Sep 20, 2026	51-200	72 contacts →
	Partial evidence “NSI is the UK’s most recognised certification body for fire and security.” Source: RevenueBase Database · checked Sep 20, 2026
6	BM Trada Certification	Partial evidence	Hughenden, United KingdomHQ checked Sep 20, 2026	501-1,000	62 contacts →
	Partial evidence “BM TRADA is proud to be part of Element, the market leader in Testing, Inspection, and Certification services.” Source: RevenueBase Database · checked Sep 20, 2026
7	SSAIB	Partial evidence	Whitley Bay, United KingdomHQ checked Sep 20, 2026	51-200	36 contacts →
	Partial evidence “SSAIB (Security Systems and Alarms Inspection Board) is the leading certification body for organisations providing security systems and services, fire detection and alarm systems…” Source: RevenueBase Database · checked Sep 20, 2026
8	The British Institute Of Recruiters	Strong evidence	Manchester, United KingdomHQ checked Sep 20, 2026	11-50	32 contacts →
	Strong evidence “The British Institute of Recruiters (BIOR) is the professional body for staffing and recruitment, operating the Recruitment Certification Scheme for agencies and individual…” Source: RevenueBase Database · checked Sep 20, 2026
9	DCD Academy	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	30 contacts →
	Indirect evidence “DCD Academy is the data center industry’s premier workforce development partner.” Source: RevenueBase Database · checked Sep 20, 2026
10	The CPD Group	Indirect evidence	Rothwell, United KingdomHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “Our Mission Our team are passionate and dedicated to making CPD easily benchmarked, accessible, transparent and consistent for all individuals and organisations enrolling on CPD…” Source: RevenueBase Database · checked Sep 20, 2026
11	TWI Certification LTD	Partial evidence	Cambridge, United KingdomHQ checked Sep 20, 2026	11-50	20 contacts →
	Partial evidence “TWI Certification Ltd (TWI CL), is a wholly-owned subsidiary of The Welding Institute (TWI), formed in 1993 to exemplify the independence and impartiality required to deliver…” Source: RevenueBase Database · checked Sep 20, 2026
12	QA International Certification Limited	Partial evidence	Darlington, United KingdomHQ checked Sep 20, 2026	11-50	16 contacts →
	Partial evidence “QA International Certification Limited is an accredited certification body issuing internationally recognised accredited certificates to companies across a wide range of…” Source: RevenueBase Database · checked Sep 20, 2026
13	Crystal&co	Indirect evidence	Harrow, United KingdomHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “We provide training and qualifications for all levels, helping people gain the skills they need to succeed in their careers.” Source: RevenueBase Database · checked Sep 20, 2026
14	Standards International LTD	Indirect evidence	Weston, United KingdomHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “We believe everyone has the power to realise their extraordinary potential.” Source: RevenueBase Database · checked Sep 20, 2026
15	Certified CPD	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1-10	6 contacts →
	Partial evidence “Certified CPD operates across three core areas: delivering accredited professional learning, providing enterprise SaaS and learning management systems, and operating as a global…” Source: RevenueBase Database · checked Sep 20, 2026
16	KEY Performance Training LTD	Partial evidence	Swindon, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Key Performance Training is a helpful and approachable pathway to employment, talent and growth through regulated industrial sector training and certification.” Source: RevenueBase Database · checked Sep 20, 2026
17	Meta Defence Labs LTD	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “As a distinguished UK National Cyber Security Center (NCSC) Assured Services Provider and an authorised certification body for esteemed credentials such as Cyber Essentials, Cyber…” Source: RevenueBase Database · checked Sep 20, 2026
18	QAI UK	Strong evidence	Nottingham, United KingdomHQ checked Sep 20, 2026	11-50	5 contacts →
	Strong evidence “Founded in 2011, Qualifications and Assessments International (QAI) is a UK-based provider of assessments, professional programmes, and certifications.” Source: RevenueBase Database · checked Sep 20, 2026
19	Open CPD	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1-10	4 contacts →
	Partial evidence “Open CPD \| Smarter CPD Certification for Training Providers Worldwide Open CPD is a global platform that makes CPD accreditation simple, affordable, and accessible, especially…” Source: RevenueBase Database · checked Sep 20, 2026
20	Marlow Business School	Partial evidence	Marlow, United KingdomHQ checked Sep 20, 2026	51-200	4 contacts →
	Partial evidence “The Marlow Business School offers training courses and accreditation for Chief Technology Officers, Chief Information Officers and senior technology professionals.” Source: RevenueBase Database · checked Sep 20, 2026
21	The CPD Register	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “The CPD Register is a Certification Body and assurance scheme for CPD Accreditation Organisations, setting standards and ensuring compliance at every stage of the CPD Process, to…” Source: RevenueBase Database · checked Sep 20, 2026
22	Tecknologia	Indirect evidence	Ilford, United KingdomHQ checked Sep 20, 2026	11-50	3 contacts →
	Indirect evidence “Leading Trainings, Services and Consulting provider at global scale, focused on improving value delivery for organisations through strategic alignment between initiatives and…” Source: RevenueBase Database · checked Sep 20, 2026
23	British Assessment Bureau Limited	Indirect evidence	Kings Hill, United KingdomHQ checked Sep 20, 2026	51-200	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
24	PS Professional	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	1 contacts →
	Partial evidence “The PS Professional is the world’s first non-vendor specific programme that develops and certifies both the technical and non-technical skills of professional services…” Source: RevenueBase Database · checked Sep 20, 2026
25	QECUK	Partial evidence	Finchampstead, United KingdomHQ checked Sep 20, 2026	1-10	1 contacts →
	Partial evidence “QEC UK offers certification and training to ISO Standards.” 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 certification providers. 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 certification providers.
Partial evidence: Its own public description names part of professional certification providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name professional certification providers. 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 85 professional certification providers based in the United Kingdom

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Professional certification providers based in the United Kingdom at a glance

As of Sep 20, 2026

29.9%Verified-email coverage

30.4Average contacts per company

11-50Median size (employees)

43.5%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 85 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 certification providers, 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 certification providers”. 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 certification providers), 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 certification providers, 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, 772 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 certification providers by metro

Professional certification providers in London37

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 certification providers, 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 certification providers are there based in the United Kingdom?

RevenueBase identified 85 professional certification providers 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?

The Knowledge Academy, headquartered in Bracknell, tops this list with the largest team on record.

Which city has the most professional certification providers?

London leads with 37 headquartered companies, followed by High Wycombe (2) and Londra (2).

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 772 verified decision-maker contacts tracked across these 85 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.