Company lists · Data verified August 2026

Top 22 Contact database companies based in the United Kingdom

Name: Contact database 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 60 companies tracked

There are 60 contact database companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 297 professional contacts across them, including 76 with verified work emails and 21 with mobile numbers. London is the largest hub.

This list covers contact database 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.

60Companies

297Contacts tracked

76Verified emails

21Mobile numbers

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The 22 largest contact database companies based in the United Kingdom

Ranked by team size

Top 22 of 60 contact database 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	Capsule	Manchester	11-50	56	30
2	Optimiser	London	51-200	56	10
3	ONE Card	n/a	1-10	14	5
4	Cardwell Marketing	Tachbrook Park	11-50	10	1
5	Buddycrm	Walsall	11-50	9	5
6	Pretectum	Edinburgh	1-10	9	1
7	Contactbase	London	1-10	8	1
8	Ienterprises	Bracknell	51-200	6	2
9	Glassjaw	London	11-50	5	3
10	Rubi CRM	Leeds	1-10	4	3
11	Direct Data Squad	Bournemouth	11-50	4	2
12	Crm-Uk.com LTD	Banbury	1-10	4	2
13	Apteco Benelux	Warwick	51-200	3	2
14	Wyverndm	Ely	11-50	3	1
15	Hummingbirdcrm	Cheshire	1-10	2	1
16	Prospectsafari	London	1-10	2	1
17	Prospect 360	Camberley	1-10	2	1
18	Time Assist	Birmingham	1-10	2	1
19	Mythic Software	Bournemouth	1-10	2	1
20	Upper Sigma	n/a	11-50	1	1
21	I90 Media	Cambridge	1-10	1	1
22	Nettmore Limited	Fleet	1-10	1	1

Showing 22 of 60 contact database companies based in the United Kingdom

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Contact database companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 17 HQs

21Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Contact database companies by metro

Metro	Companies
Contact database companies in London	17
Contact database companies in Manchester	3
Contact database companies in Glasgow	3
Contact database companies in Bournemouth	2
Contact database companies in Bracknell	2
Contact database companies in Bucks	1
Contact database companies in Cambridge	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 “contact database 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; 0 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 contact database companies are there based in the United Kingdom?

There are 60 contact database companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Capsule, headquartered in Manchester, tops this list with the largest team on record.

Which city has the most contact database companies?

London leads with 17 headquartered companies, followed by Manchester (3) and Glasgow (3).

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 76 verified decision-maker contacts tracked across these 60 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.