Company lists · Data verified August 2026

Top 25 Cloud communications consulting companies based in the United Kingdom

Name: Cloud communications consulting 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 790 companies tracked

There are 790 cloud communications consulting companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 35,685 professional contacts across them, including 4,313 with verified work emails and 1,272 with mobile numbers. London is the largest hub.

This list covers cloud communications consulting 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.

790Companies

35,685Contacts tracked

4,313Verified emails

1,272Mobile numbers

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The 25 largest cloud communications consulting companies based in the United Kingdom

Ranked by team size

Top 25 of 790 cloud communications consulting 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	Shoretel	White Waltham Maidenhead	1,001-5,000	690	6
2	Sourcefuse	London	501-1,000	669	288
3	Exponential-E	London	501-1,000	661	505
4	Alianza	Enfield	501-1,000	605	293
5	Devoteam Google Cloud Partner	London	501-1,000	546	130
6	Maintel	London	201-500	361	215
7	BUI	Derby	51-200	250	19
8	Calltower	London	201-500	226	128
9	Proact IT Group AB	Leeds	1,001-5,000	224	79
10	Cloud Direct	n/a	51-200	168	106
11	Avoira	Bury	51-200	155	78
12	Elite Group	Chorley	51-200	151	35
13	Digitalwell	London	201-500	113	93
14	RDX	London	501-1,000	110	9
15	Flotek Group Limited	Pencoed	51-200	95	56
16	Adex International	Folkestone	51-200	91	31
17	Sysgroup	London	51-200	88	55
18	Iotap INC	Middleton	51-200	86	20
19	Gradwell	West Bath	51-200	85	43
20	Sipcom	London	501-1,000	84	28
21	Xtravirt	London	51-200	83	47
22	Excalibur Communications	Swindon	51-200	72	14
23	Tuliptech	Leicester	51-200	68	39
24	Telappliant	Manchester	51-200	67	44
25	Cogeco Peer 1	Southampton	501-1,000	67	7

Showing 25 of 790 cloud communications consulting companies based in the United Kingdom

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Cloud communications consulting companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 286 HQs

1,272Contacts with mobile numbers

24Emails re-verified in last 30 days

Companies by employee count

1-10

440

11-50

256

51-200

201-500

501-1,000

1,001-5,000

Cloud communications consulting companies by metro

Metro	Companies
Cloud communications consulting companies in London	286
Cloud communications consulting companies in Manchester	27
Cloud communications consulting companies in Leeds	17
Cloud communications consulting companies in Reading	12
Cloud communications consulting companies in Milton Keynes	11
Cloud communications consulting companies in Edinburgh	9
Cloud communications consulting companies in Newcastle Upon Tyne	7

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 consulting 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; 24 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 consulting companies are there based in the United Kingdom?

There are 790 cloud communications consulting companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Shoretel, headquartered in White Waltham Maidenhead, tops this list with the largest team on record.

Which city has the most cloud communications consulting companies?

London leads with 286 headquartered companies, followed by Manchester (27) and Leeds (17).

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 4,313 verified decision-maker contacts tracked across these 790 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.