Company lists · Data verified August 2026

Top 25 Cloud communications platforms based in the United Kingdom

Name: Cloud communications platforms 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 172 companies tracked

There are 172 cloud communications platforms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 7,464 professional contacts across them, including 2,826 with verified work emails and 1,208 with mobile numbers. London is the largest hub.

This list covers cloud communications platforms 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.

172Companies

7,464Contacts tracked

2,826Verified emails

1,208Mobile numbers

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The 25 largest cloud communications platforms based in the United Kingdom

Ranked by team size

Top 25 of 172 cloud communications platforms 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	8x8	Aylesbury	1,001-5,000	2,427	1,335
2	Full Creative	Edinburgh	501-1,000	756	35
3	Shoretel	White Waltham Maidenhead	1,001-5,000	690	6
4	Alianza	Enfield	501-1,000	605	293
5	Imimobile Part Of Webex	London	1,001-5,000	436	54
6	Calltower	London	201-500	226	128
7	Synacor	London	201-500	182	81
8	Vocovo	Cheltenham	51-200	165	107
9	Luware	London	51-200	154	110
10	NTT Ltd. Collaboration & CX	London	10001+	120	15
11	Daktela	Chester	51-200	98	72
12	Gradwell	West Bath	51-200	85	43
13	Sipcom	London	501-1,000	84	28
14	Telappliant	Manchester	51-200	67	44
15	Britannic	Guildford	51-200	65	35
16	Nebula	Guildford	51-200	60	29
17	Digitalk	Milton Keynes	51-200	58	32
18	Firstcom Europe LTD	Bolton	51-200	55	40
19	Microtalk	London	11-50	44	9
20	SVL	East Kilbride	11-50	35	18
21	Quickblox	London	11-50	31	14
22	Mission Labs	Manchester	51-200	29	12
23	Radius Connect Solutions Ireland	Belfast	11-50	26	4
24	Marlin Communications	London	11-50	22	19
25	Meetingzone	Thame	51-200	18	2

Showing 25 of 172 cloud communications platforms based in the United Kingdom

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Cloud communications platforms based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 51 HQs

1,208Contacts with mobile numbers

10Emails 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+

Cloud communications platforms by metro

Metro	Companies
Cloud communications platforms in London	51
Cloud communications platforms in Manchester	8
Cloud communications platforms in Guildford	3
Cloud communications platforms in Birmingham	3
Cloud communications platforms in Poole	3
Cloud communications platforms in Bolton	3
Cloud communications platforms in Milton Keynes	3

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 “cloud communications platforms”, 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; 10 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 cloud communications platforms are there based in the United Kingdom?

There are 172 cloud communications platforms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

8x8, headquartered in Aylesbury, tops this list with the largest team on record.

Which city has the most cloud communications platforms?

London leads with 51 headquartered companies, followed by Manchester (8) and Guildford (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 2,826 verified decision-maker contacts tracked across these 172 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.