Company lists · Data refreshed September 2026

Top 25 Customer identity software companies based in the United Kingdom

Name: Customer identity software companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 76 companies tracked

RevenueBase identified 76 customer identity software companies headquartered in the United Kingdom as of September 2026 and tracks 3,411 professional contacts across them, including 1,860 with verified work emails. London is the largest hub.

This list covers customer identity software companies 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 28, 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 28, 2026 86% judged on-target in blind review

76Companies

3,411Contacts tracked

1,860Verified emails

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The 25 largest customer identity software companies based in the United Kingdom

Ranked by team size

Top 25 of 76 customer identity software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer identity software companies: 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	YOTI	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	426 contacts →
	Partial evidence “Yoti helps businesses and people build trust with privacy-focused identity and age verification solutions.” Source: RevenueBase Database · checked Sep 28, 2026
2	Callsign	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	253 contacts →
	Partial evidence “Callsign is pioneering digital trust through proprietary technology that uniquely mimics the way humans identify each other in the real world.” Source: RevenueBase Database · checked Sep 28, 2026
3	Iproov	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	203 contacts →
	Partial evidence “iProov is the world leader in biometric face verification, helping organizations confirm that a real person is behind every digital identity.” Source: RevenueBase Database · checked Sep 28, 2026
4	Intragen	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	190 contacts →
	Partial evidence “Intragen is a cyber security business focused on managed Identity solutions and services.” Source: RevenueBase Database · checked Sep 28, 2026
5	Proofid	Partial evidence	Manchester, United KingdomHQ checked Sep 28, 2026	51-200	111 contacts →
	Partial evidence “ProofID is your trusted identity security partner – delivering frictionless, secure digital experiences for organisations with complex needs.” Source: RevenueBase Database · checked Sep 28, 2026
6	Intercede	Partial evidence	Lutterworth, United KingdomHQ checked Sep 28, 2026	51-200	97 contacts →
	Partial evidence “Intercede® is a cybersecurity company specialising in identity, credential management and secure mobility to enable digital trust.” Source: RevenueBase Database · checked Sep 28, 2026
7	Ondato	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	91 contacts →
	Indirect evidence “Ondato is a Tech company streamlining KYC, Age Verification, and AML-related processes using cutting-edge AI solutions that cover the full spectrum of compliance challenges, from…” Source: RevenueBase Database · checked Sep 28, 2026
8	id5.io	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	73 contacts →
	Partial evidence “ID5 is redefining identity for digital advertising, building solutions where privacy and addressability work in sync.” Source: RevenueBase Database · checked Sep 28, 2026
9	Mitek Systems UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	65 contacts →
	Partial evidence “Mitek (NASDAQ: MITK) is a global leader in mobile capture and digital identity verification solutions built on the latest advancements in AI and machine learning.” Source: RevenueBase Database · checked Sep 28, 2026
10	Credas	Indirect evidence	Cardiff, United KingdomHQ checked Sep 28, 2026	11-50	48 contacts →
	Indirect evidence “No matter the market or sector, Credas can streamline your onboarding process using our market-leading technology to revolutionise the way you manage compliance and due diligence.” Source: RevenueBase Database · checked Sep 28, 2026
11	ONEID	Indirect evidence	Manchester, United KingdomHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “OneID® simplifies and secures the digital journeys of individuals and businesses and helps them reach their goals faster.” Source: RevenueBase Database · checked Sep 28, 2026
12	Authologic	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “Authologic bridges the gap between traditional KYC and the future of digital identity verification.” Source: RevenueBase Database · checked Sep 28, 2026
13	Pirean	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	25 contacts →
	Partial evidence “Recognised experts in Identity and Access Management, we deliver industry leading capabilities for Consumer, Mobile and Workforce Identity.” Source: RevenueBase Database · checked Sep 28, 2026
14	Passportscan	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “PassportScan® is distributed for GlobeID Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
15	XYDUS	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Regulatory requirements are so often an essential part of onboarding.” Source: RevenueBase Database · checked Sep 28, 2026
16	Idlayr	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “IDlayr is re-inventing online Identity for Humans and Agents - creating a unified governance and control plane binding mobile identity, delegated authority, and real-time…” Source: RevenueBase Database · checked Sep 28, 2026
17	folio.id	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “In Today's digital world, knowing you're engaging with a real person is a challenge filled with risk.” Source: RevenueBase Database · checked Sep 28, 2026
18	Identifymobile	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Strong evidence “IdentifyMobile specialise in mobile identity solutions to strengthen customer authentication and secure customer interaction” Source: RevenueBase Database · checked Sep 28, 2026
19	Self Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Self is a research and product company building an identity layer for the internet.” Source: RevenueBase Database · checked Sep 28, 2026
20	My1login	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “Founded in 2007, My1Login is a leader in Identity Management, protecting enterprises against cybersecurity threats through its Identity & Access Management (IAM) solution.” Source: RevenueBase Database · checked Sep 28, 2026
21	Vouchsafe	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Businesses spend hundreds of billions on fraud defences every year, but fraud is still the most common crime in the UK.” Source: RevenueBase Database · checked Sep 28, 2026
22	Prime Airtime	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “Prime Airtime UK (Central London).” Source: RevenueBase Database · checked Sep 28, 2026
23	Xertilox	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “At Xertilox, we're redefining the future of digital identity.” Source: RevenueBase Database · checked Sep 28, 2026
24	SAFFE	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Our technology has been used for years by major institutions throughout the globe and is designed to get you started immediately, increasing the security of your business without…” Source: RevenueBase Database · checked Sep 28, 2026
25	Authgear	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	5 contacts →
	Indirect evidence “Authgear enables organizations to provide users with secure access to any applications.” Source: RevenueBase Database · checked Sep 28, 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: customer identity software companies. 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 customer identity software companies.
Partial evidence: Its own public description names part of customer identity software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer identity software companies. 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 76 customer identity software companies based in the United Kingdom

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Customer identity software companies based in the United Kingdom at a glance

As of Sep 28, 2026

54.5%Verified-email coverage

44.9Average contacts per company

11-50Median size (employees)

56.6%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 76 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 customer identity software companies, 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 “customer identity software companies”. 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 customer identity software companies), 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 customer identity software companies, 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, 1,860 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 28, 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.

Customer identity software companies by metro

Customer identity software companies in London43

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 customer identity software companies, 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 customer identity software companies are there based in the United Kingdom?

RevenueBase identified 76 customer identity software companies 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?

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

Which city has the most customer identity software companies?

London leads with 43 headquartered companies, followed by Manchester (5) and Bath (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 1,860 verified decision-maker contacts tracked across these 76 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 28, 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.