Company lists · Data verified August 2026

Top 25 Cloud communications companies based in the United Kingdom

Name: Cloud communications 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 252 companies tracked

There are 252 cloud communications companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 8,273 professional contacts across them, including 2,769 with verified work emails and 915 with mobile numbers. London is the largest hub.

This list covers cloud communications 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.

252Companies

8,273Contacts tracked

2,769Verified emails

915Mobile numbers

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The 25 largest cloud communications companies based in the United Kingdom

Ranked by team size

Top 25 of 252 cloud communications 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	Kaltura	London	501-1,000	734	386
3	Shoretel	White Waltham Maidenhead	1,001-5,000	690	6
4	Onecom	Whiteley	501-1,000	650	437
5	Alianza	Enfield	501-1,000	605	293
6	Imimobile Part Of Webex	London	1,001-5,000	436	54
7	Calltower	London	201-500	226	128
8	Synacor	London	201-500	182	81
9	Vocovo	Cheltenham	51-200	165	107
10	Luware	London	51-200	154	110
11	Elite Group	Chorley	51-200	151	35
12	NTT Ltd. Collaboration & CX	London	10001+	120	15
13	Daktela	Chester	51-200	98	72
14	Flotek Group Limited	Pencoed	51-200	95	56
15	Wavecrest	London	51-200	92	18
16	Gradwell	West Bath	51-200	85	43
17	Sipcom	London	501-1,000	84	28
18	Telappliant	Manchester	51-200	67	44
19	Britannic	Guildford	51-200	65	35
20	Nebula	Guildford	51-200	60	29
21	Digitalk	Milton Keynes	51-200	58	32
22	Firstcom Europe LTD	Bolton	51-200	55	40
23	Microtalk	London	11-50	44	9
24	Voiceflex	Coventry	11-50	41	32
25	SVL	East Kilbride	11-50	35	18

Showing 25 of 252 cloud communications companies based in the United Kingdom

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Cloud communications companies based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 69 HQs

915Contacts with mobile numbers

18Emails re-verified in last 30 days

Companies by employee count

1-10

103

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Cloud communications companies by metro

Metro	Companies
Cloud communications companies in London	69
Cloud communications companies in Manchester	6
Cloud communications companies in Poole	5
Cloud communications companies in Leeds	5
Cloud communications companies in Birmingham	4
Cloud communications companies in Nottingham	4
Cloud communications companies in Belfast	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 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; 18 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 companies are there based in the United Kingdom?

There are 252 cloud communications 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 cloud communications companies?

London leads with 69 headquartered companies, followed by Manchester (6) and Poole (5).

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 2,769 verified decision-maker contacts tracked across these 252 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.