Company lists · Data refreshed September 2026

Top 25 Telecommunication consulting companies based in the United Kingdom

Name: Telecommunication consulting companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 819 companies tracked

RevenueBase identified 819 telecommunication consulting companies headquartered in the United Kingdom as of September 2026 and tracks 8,908 professional contacts across them, including 2,828 with verified work emails. London is the largest hub.

This list covers telecommunication 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

819Companies

8,908Contacts tracked

2,828Verified emails

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The 25 largest telecommunication consulting companies based in the United Kingdom

Ranked by team size

Top 25 of 819 telecommunication consulting companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunication consulting companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Kelly Group	Indirect evidence	Wembley, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,053 contacts →
	Indirect evidence “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Source: RevenueBase Database · checked Sep 16, 2026
2	Maintel	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	341 contacts →
	Indirect evidence “Maintel is a communications managed services provider.” Source: RevenueBase Database · checked Sep 16, 2026
3	Cartesian	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	302 contacts →
	Strong evidence “Cartesian is a specialist consulting firm focused on the global telecommunications, media, and technology industries and is now part of Bounteous, an AI services firm helping…” Source: RevenueBase Database · checked Sep 16, 2026
4	Magdalene	Partial evidence	St Ives, United KingdomHQ checked Sep 16, 2026	201-500	273 contacts →
	Partial evidence “Magdalene provides comprehensive independent solutions which address the individual needs of our customers throughout the Telecommunications Industry.” Source: RevenueBase Database · checked Sep 16, 2026
5	Avoira	Indirect evidence	Bury, United KingdomHQ checked Sep 16, 2026	51-200	156 contacts →
	Indirect evidence “Our expertise spans consultancy, sales, installation and maintenance services across the communication spectrum, from unified comms systems and hardware, CX solutions and cloud…” Source: RevenueBase Database · checked Sep 16, 2026
6	Beacon Comms	Indirect evidence	Tavistock, United KingdomHQ checked Sep 16, 2026	201-500	151 contacts →
	Indirect evidence “Beacon Comms is the trading name of Beacon Communication Services Ltd.” Source: RevenueBase Database · checked Sep 16, 2026
7	Genesis Technology Services Limited	Indirect evidence	Peterborough, United KingdomHQ checked Sep 16, 2026	501-1,000	132 contacts →
	Indirect evidence “Genesis Technology Services Limited (GTS Ltd) is a leading engineering service provider in the UK and a global multinational corporation, based in Cambridgeshire, UK.” Source: RevenueBase Database · checked Sep 16, 2026
8	Radius Connect Solutions	Indirect evidence	Crewe, United KingdomHQ checked Sep 16, 2026	201-500	122 contacts →
	Indirect evidence “Radius Connect Solutions is an award-winning independent “total communications” solution provider.” Source: RevenueBase Database · checked Sep 16, 2026
9	Tela Technology	Indirect evidence	Hampton-in-arden, United KingdomHQ checked Sep 16, 2026	51-200	111 contacts →
	Indirect evidence “We provide communication solutions and IT business services to businesses, big and small, to help your business grow.” Source: RevenueBase Database · checked Sep 16, 2026
10	Teligent Limited	Indirect evidence	Reading, United KingdomHQ checked Sep 16, 2026	51-200	99 contacts →
	Indirect evidence “With operations that span the United Kingdom, Teligent Limited is a dynamic infrastructure delivery and management consultancy servicing the biggest names in the UK…” Source: RevenueBase Database · checked Sep 16, 2026
11	YO Telecom	Partial evidence	Southampton, United KingdomHQ checked Sep 16, 2026	51-200	97 contacts →
	Partial evidence “Yo Telecom is an award winning telecommunications provider that specialises in small to medium sized businesses.” Source: RevenueBase Database · checked Sep 16, 2026
12	Waldon Telecom	Indirect evidence	West Byfleet, United KingdomHQ checked Sep 16, 2026	51-200	93 contacts →
	Indirect evidence “Providing high quality, dedicated telecom infrastructure services to Operators across the country.” Source: RevenueBase Database · checked Sep 16, 2026
13	ICE Telecommunications Limited	Partial evidence	Crewe, United KingdomHQ checked Sep 16, 2026	51-200	89 contacts →
	Partial evidence “Ice Comms are an independent consultant which specialise in mobile, traditional landline, hosted, and broadband business telecommunication solutions.” Source: RevenueBase Database · checked Sep 16, 2026
14	Linbrooke Services LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 16, 2026	201-500	89 contacts →
	Indirect evidence “We connect people, technologies and locations, enabling service providers, OEM's and internet service providers to deploy, scale, support and maintain network infrastructure…” Source: RevenueBase Database · checked Sep 16, 2026
15	Mobile Systems International Msiuk	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	89 contacts →
	Partial evidence “32 years of excellence in delivering consultancy, solutions, services and products in technology, telecommunications, platforms and regulatory.” Source: RevenueBase Database · checked Sep 16, 2026
16	Novo Technologies Limited	Indirect evidence	Irvine, United KingdomHQ checked Sep 16, 2026	51-200	79 contacts →
	Indirect evidence “Providing World-class Communication Network and Security Infrastructure Solutions Novo Technologies is dedicated to projects excellence, Novo Technologies undertakes end to end…” Source: RevenueBase Database · checked Sep 16, 2026
17	Speedflow	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	79 contacts →
	Indirect evidence “With a broad experience in the industry, Speedflow is in the best position to provide you with products and services proven by time to be effective.” Source: RevenueBase Database · checked Sep 16, 2026
18	ICS Communications	Indirect evidence	Camberley, United KingdomHQ checked Sep 16, 2026	11-50	75 contacts →
	Indirect evidence “Contact an expert now: 0800 9 77 88 99 Specialists in providing businesses with telecoms, data and energy since 1989.” Source: RevenueBase Database · checked Sep 16, 2026
19	Rydal Group	Indirect evidence	Peterborough, United KingdomHQ checked Sep 16, 2026	51-200	74 contacts →
	Indirect evidence “Rydal Group is the brand name of Rydal Communications LTD, Rydal Security LTD & Rydal Energy LTD.” Source: RevenueBase Database · checked Sep 16, 2026
20	Excalibur Communications	Partial evidence	Swindon, United KingdomHQ checked Sep 16, 2026	51-200	72 contacts →
	Partial evidence “Excalibur provides an end to end business consulting service that offers reliable insight, and expertise in communications and technology.” Source: RevenueBase Database · checked Sep 16, 2026
21	Welcomm Communications	Indirect evidence	Market Harborough, United KingdomHQ checked Sep 16, 2026	51-200	69 contacts →
	Indirect evidence “With 30+ years of experience in industry, Welcomm transform the way businesses communicate and operate.” Source: RevenueBase Database · checked Sep 16, 2026
22	Abzorb	Indirect evidence	Brighouse, United KingdomHQ checked Sep 16, 2026	51-200	60 contacts →
	Indirect evidence “Business: It’s all about connecting people.” Source: RevenueBase Database · checked Sep 16, 2026
23	Nice Network	Indirect evidence	Sunderland, United KingdomHQ checked Sep 16, 2026	11-50	59 contacts →
	Indirect evidence “We are B2B Telecom & IoT solution providers.” Source: RevenueBase Database · checked Sep 16, 2026
24	MMX	Indirect evidence	Solihull, United KingdomHQ checked Sep 16, 2026	51-200	54 contacts →
	Indirect evidence “Here at MMX (part of the TXO group), we're experts in providing communication network design, build & support services.” Source: RevenueBase Database · checked Sep 16, 2026
25	Business Advantage	Strong evidence	Petts Wood, United KingdomHQ checked Sep 16, 2026	11-50	48 contacts →
	Strong evidence “Business Advantage is a B2B research, business development and marketing consulting practice operating in the global IT, Digital and Telecommunications sectors.” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: telecommunication consulting companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names telecommunication consulting companies.
Partial evidence: Its own public description names part of telecommunication consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunication consulting companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 819 telecommunication consulting companies based in the United Kingdom

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Telecommunication consulting companies based in the United Kingdom at a glance

As of Sep 16, 2026

31.7%Verified-email coverage

10.9Average contacts per company

1-10Median size (employees)

18.8%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

459

11-50

280

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 819 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among telecommunication consulting companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “telecommunication consulting companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names telecommunication consulting companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among telecommunication consulting companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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: Every listed company carries at least one verified work email, 2,828 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Telecommunication consulting companies by metro

Telecommunication consulting companies in London154

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names telecommunication consulting companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many telecommunication consulting companies are there based in the United Kingdom?

RevenueBase identified 819 telecommunication consulting companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

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 telecommunication consulting companies?

London leads with 154 headquartered companies, followed by Birmingham (18) and Manchester (16).

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 2,828 verified decision-maker contacts tracked across these 819 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.