Company lists · Data verified August 2026

Top 25 Authentication software companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 58 companies tracked

There are 58 authentication software companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 1,787 professional contacts across them, including 945 with verified work emails and 374 with mobile numbers. London is the largest hub.

This list covers authentication 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. Data current as of August 28, 2026.

58Companies

1,787Contacts tracked

945Verified emails

374Mobile numbers

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The 25 largest authentication software companies based in the United Kingdom

Ranked by team size

Top 25 of 58 authentication software companies based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Yubico	West Horsley	501-1,000	546	370
2	Auth0	London	501-1,000	317	112
3	Callsign	Manchester	51-200	249	112
4	Id-Ware	London	51-200	115	56
5	Intercede	Lutterworth	51-200	96	64
6	Nevis Security	London	51-200	81	56
7	Acre Identity By TDS	London	51-200	72	27
8	NYMI	Maidenhead	51-200	40	29
9	fraud.com	London	11-50	33	20
10	Idenprotect	Guildford	11-50	24	13
11	Swivel Secure	Leeds	51-200	22	5
12	Pureid	Royston	11-50	20	11
13	Miracl The Login YOU Love	London	11-50	16	10
14	folio.id	London	11-50	15	13
15	Salt Group	London	11-50	12	7
16	Suprema UK & Ireland	Birmingham	11-50	10	7
17	Self Group	London	11-50	10	7
18	Blindspot Global Sᴇqᴜr	London	51-200	10	5
19	Authgear	London	51-200	5	3
20	Arissian LTD	Bromsgrove	1-10	4	4
21	Secure Cloudlink	London	11-50	4	1
22	Aglide	London	11-50	3	3
23	Cybersafe A Securitybridge Company	Longford	11-50	3	2
24	Phronesis Technologies Limited	Bath	1-10	2	2
25	Ipassport LTD	London	11-50	2	1

Showing 25 of 58 authentication software companies based in the United Kingdom

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Authentication software companies based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 29 HQs

374Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

Authentication software companies by metro

Metro	Companies
Authentication software companies in London	29
Authentication software companies in Bristol	2
Authentication software companies in Manchester	1
Authentication software companies in Birmingham	1
Authentication software companies in Newcastle Upon Tyne	1
Authentication software companies in Swanage	1
Authentication software companies in Wateringbury	1
Authentication software companies in Watford	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “authentication software companies”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many authentication software companies are there based in the United Kingdom?

There are 58 authentication software companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Yubico, headquartered in West Horsley, tops this list with the largest team on record.

Which city has the most authentication software companies?

London leads with 29 headquartered companies, followed by Bristol (2) and Manchester (1).

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 945 verified decision-maker contacts tracked across these 58 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.