Company lists · Data verified August 2026

Top 25 Enterprise telecom consulting companies based in the United Kingdom

Name: Enterprise telecom 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 800 companies tracked

There are 800 enterprise telecom consulting companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 8,626 professional contacts across them, including 3,422 with verified work emails and 478 with mobile numbers. London is the largest hub.

This list covers enterprise telecom 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.

800Companies

8,626Contacts tracked

3,422Verified emails

478Mobile numbers

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The 25 largest enterprise telecom consulting companies based in the United Kingdom

Ranked by team size

Top 25 of 800 enterprise telecom 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	Kelly Group	Wembley	1,001-5,000	1,059	234
2	Exponential-E	London	501-1,000	661	505
3	Maintel	London	201-500	361	215
4	Magdalene	Belfast	201-500	278	95
5	Linbrooke Services LTD	Swindon	201-500	165	113
6	Avoira	Bury	51-200	155	78
7	Beacon Comms	Tamworth	201-500	151	82
8	Genesis Technology Services Limited	Swindon	501-1,000	132	57
9	Opticoreit	London	51-200	124	86
10	Radius Connect Solutions	Belfast	201-500	124	39
11	Digitalwell	London	201-500	113	93
12	Tela Technology	Worcester	51-200	109	76
13	Glow Services Corp	n/a	51-200	99	59
14	ICE Telecommunications Limited	Portsmouth	51-200	89	43
15	6degreesit PVT LTD	Telford	51-200	89	21
16	Novo Technologies Limited	Irvine	51-200	79	47
17	Rydal Group	Peterborough	51-200	73	14
18	Excalibur Communications	Swindon	51-200	72	14
19	Welcomm Communications	Market Harborough	51-200	68	42
20	Phoebe ILE DE France	London	51-200	61	43
21	Abzorb	Brighouse	51-200	61	22
22	5g Communications	High Wycombe Eng	51-200	60	40
23	The ONE Point	n/a	51-200	54	40
24	MMX	Livingston	51-200	54	29
25	TIG Data Intelligence	London	51-200	45	1

Showing 25 of 800 enterprise telecom consulting companies based in the United Kingdom

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Enterprise telecom consulting companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 189 HQs

478Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

459

11-50

251

51-200

201-500

501-1,000

1,001-5,000

Enterprise telecom consulting companies by metro

Metro	Companies
Enterprise telecom consulting companies in London	189
Enterprise telecom consulting companies in Manchester	21
Enterprise telecom consulting companies in Reading	17
Enterprise telecom consulting companies in Birmingham	17
Enterprise telecom consulting companies in Leeds	13
Enterprise telecom consulting companies in Bristol	9
Enterprise telecom consulting companies in Glasgow	9

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 “enterprise telecom 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; 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 enterprise telecom consulting companies are there based in the United Kingdom?

There are 800 enterprise telecom consulting companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Kelly Group, headquartered in Wembley, tops this list with the largest team on record.

Which city has the most enterprise telecom consulting companies?

London leads with 189 headquartered companies, followed by Manchester (21) and Reading (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 3,422 verified decision-maker contacts tracked across these 800 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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Related lists

Enterprise telecom consulting companies by geography

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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.