Company lists · Data refreshed September 2026
Top 25 Authentication technology companies based in the United Kingdom
RevenueBase identified 87 authentication technology companies headquartered in the United Kingdom as of September 2026 and tracks 1,517 professional contacts across them, including 745 with verified work emails. London is the largest hub.
This list covers authentication technology 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 19, 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.
The 25 largest authentication technology companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 203 contacts → | ||||
Indirect 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 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 191 contacts → | ||||
Indirect evidence “For more than thirty years we have been at the forefront of innovation in transaction automation.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 97 contacts → | ||||
Indirect evidence “Intercede® is a cybersecurity company specialising in identity, credential management and secure mobility to enable digital trust.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 80 contacts → | ||||
Partial evidence “IDVerse®, part of LexisNexis® Risk Solutions is a cutting-edge document authentication and biometric verification solution that helps you confidently approve trusted transactions…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 48 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 36 contacts → | ||||
Partial evidence “On December 31, 2025, Keyless was acquired by Ping Identity to help deliver stronger, privacy-preserving identity verification and authentication for the AI era.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 34 contacts → | ||||
Indirect evidence “Facia empowers the world's fastest and most accurate facial biometrics solutions, including Deepfake Detection and 3D Liveness Detection.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 33 contacts → | ||||
Partial evidence “Fraud.com ensures trust at every step of the customer's digital journey; this complete end-to-end protection delivers unified identity, authentication and fraud detection and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 22 contacts → | ||||
Partial evidence “Major global enterprises and educational institutions across the globe trust Swivel Secure's Authentication Platform to help their employees, contractors and students work more…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 21 contacts → | ||||
Indirect evidence “Redefining Identity Management” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 17 contacts → | ||||
Indirect evidence “ACTAtek delivers Unified Edge AI IoT solutions that transform access control from a door security system into the real-time intelligence layer of modern buildings.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 16 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 14 contacts → | ||||
Partial evidence “FinGo is the world’s first biometric identity authentication solution, open to everyone.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Partial evidence “Top-ranked face recognition, fingerprint, and iris technology to make the world smarter, safer, stronger.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 10 contacts → | ||||
Partial evidence “IdentifyMobile specialise in mobile identity solutions to strengthen customer authentication and secure customer interaction” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 10 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Indirect evidence “Built on over 30 years of Army experience, safety is at the core of what we do.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 contacts → | ||||
Indirect evidence “Self is a research and product company building an identity layer for the internet.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “Based in Nottinghamshire, UK CCTech are an enterprise systems development house focused on delivering intelligent solutions for global clients across retail; sport & leisure; high…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Indirect evidence “Globally recognised provider of bespoke biometric time and attendance equipment, Time Systems UK Ltd has over 30 years of experience in the design and distribution of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Indirect evidence “At Xertilox, we're redefining the future of digital identity.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
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: authentication technology 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 authentication technology companies.
- Partial evidence
- Its own public description names part of authentication technology companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name authentication technology 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 87 authentication technology companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 745 reachable decision-makers.
Free signup · no credit card
Authentication technology companies based in the United Kingdom at a glance
As of Sep 19, 2026Companies by employee count
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 87 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 authentication technology 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 “authentication technology 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 authentication technology 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 authentication technology 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, 745 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 19, 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.
Authentication technology companies by metro
- Authentication technology companies in London41
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 authentication technology 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 authentication technology companies are there based in the United Kingdom?
RevenueBase identified 87 authentication technology 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?
Callsign, headquartered in Manchester, tops this list with the largest team on record.
Which city has the most authentication technology companies?
London leads with 41 headquartered companies, followed by Brighton (2) and Bristol (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 745 verified decision-maker contacts tracked across these 87 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 87 authentication technology companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Authentication technology companies by geography
- Authentication technology companies based in Australia
- Authentication technology companies based in Brazil
- Authentication technology companies based in Canada
- Authentication technology companies based in France
- Authentication technology companies based in Germany
- Authentication technology companies based in India
- Authentication technology companies based in the Netherlands
- Authentication technology companies based in South Africa
- Authentication technology companies based in Spain
- Authentication technology companies based in the United States
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Authentication technology companies based in Australia
- Authentication technology companies based in Brazil
- Authentication technology companies based in Canada
- Authentication technology companies based in France
- Authentication technology companies based in Germany
- Authentication technology companies based in India