Company lists · Data verified August 2026

Top 25 Collaboration and communication software companies based in the United Kingdom

Name: Collaboration and communication 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 122 companies tracked

There are 122 collaboration and communication software companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 2,995 professional contacts across them, including 890 with verified work emails and 408 with mobile numbers. London is the largest hub.

This list covers collaboration and communication 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.

122Companies

2,995Contacts tracked

890Verified emails

408Mobile numbers

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The 25 largest collaboration and communication software companies based in the United Kingdom

Ranked by team size

Top 25 of 122 collaboration and communication 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	Full Creative	Edinburgh	501-1,000	756	35
2	Calltower	London	201-500	226	128
3	Synacor	London	201-500	182	81
4	Vocovo	Cheltenham	51-200	165	107
5	Onlyoffice	London	51-200	125	2
6	NTT Ltd. Collaboration & CX	London	10001+	120	15
7	Involve Visual Collaboration	Weymouth	51-200	96	55
8	Element	London	51-200	85	57
9	XAIT	Cheltenham	51-200	78	39
10	VIJU	London	201-500	70	4
11	Nebula	Guildford	51-200	60	29
12	Avocor	Clerkenwell	51-200	48	36
13	Visavvi, An SCC Business	Farnborough	51-200	48	34
14	Newline Interactive Europe	London	501-1,000	47	15
15	VQ Communications	Chippenham	51-200	44	30
16	Unify Square	Leeds	n/a	44	18
17	Code Software	Northleach	11-50	32	26
18	Othership	London	11-50	27	3
19	Kolekti	London	51-200	26	11
20	Meetingzone	Thame	51-200	18	2
21	Firstclass	Beaconsfield	1,001-5,000	17	2
22	Bridgehampton	Strand	11-50	16	13
23	Kahootz	Weston	11-50	15	11
24	Ipcortex	Milton Keynes	11-50	15	9
25	HEED	London	11-50	15	4

Showing 25 of 122 collaboration and communication software companies based in the United Kingdom

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Collaboration and communication software companies based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 58 HQs

408Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Collaboration and communication software companies by metro

Metro	Companies
Collaboration and communication software companies in London	58
Collaboration and communication software companies in Bristol	3
Collaboration and communication software companies in Leeds	3
Collaboration and communication software companies in Nottingham	2
Collaboration and communication software companies in Bournemouth	2
Collaboration and communication software companies in Reading	2
Collaboration and communication software companies in Weston	2
Collaboration and communication software companies in Cheltenham	2

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 “collaboration and communication 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; 3 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 collaboration and communication software companies are there based in the United Kingdom?

There are 122 collaboration and communication software companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Full Creative, headquartered in Edinburgh, tops this list with the largest team on record.

Which city has the most collaboration and communication software companies?

London leads with 58 headquartered companies, followed by Bristol (3) and Leeds (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 890 verified decision-maker contacts tracked across these 122 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.