Company lists · Data refreshed September 2026

Top 24 Telecom infrastructure software companies based in London, United Kingdom

Name: Telecom infrastructure software companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 119 companies tracked

RevenueBase identified 119 telecom infrastructure software companies headquartered in London, United Kingdom as of September 2026 and tracks 4,065 professional contacts across them, including 1,137 with verified work emails and 157 with mobile numbers. London is the largest hub.

This list covers telecom infrastructure software companies headquartered in London, 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 13, 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 13, 2026 86% judged on-target in blind review

119Companies

4,065Contacts tracked

1,137Verified emails

157Mobile numbers

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The 24 largest telecom infrastructure software companies based in London, United Kingdom

Ranked by team size

Top 24 of 119 telecom infrastructure software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to telecom infrastructure software 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	Helios Towers	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	784 contacts →
	Partial evidence “Helios Towers is a leading independent telecom tower company connecting people and powering growth across Africa and the Middle East.” Source: RevenueBase Database · checked Sep 13, 2026
2	Cerillion Technologies	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	364 contacts →
	Strong evidence “Cerillion is a leading provider of BSS/OSS software for the telecommunications industry, with over 25 years’ experience supporting mobile, fixed, cable and multi-service operators…” Source: RevenueBase Database · checked Sep 13, 2026
3	Omobiong	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	168 contacts →
	Strong evidence “Omobio (Pvt) Ltd was established in February 2011 by a team of Professional Telecom Software Developers, tendering it’s service to Telecom Operators and Telecom Service…” Source: RevenueBase Database · checked Sep 13, 2026
4	Telesens	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	125 contacts →
	Strong evidence “Telesens is a global provider of enterprise level cost effective software products and solutions for telecom and other business domains.” Source: RevenueBase Database · checked Sep 13, 2026
5	Programus LTD	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	95 contacts →
	Strong evidence “Programus Limited boast over 15 years of experience developing the world's leading software for the Telecom and Events and Venues industries.” Source: RevenueBase Database · checked Sep 13, 2026
6	Mobile Systems International Msiuk	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
7	Speedflow	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
8	Radiocoms Systems LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	57 contacts →
	Indirect evidence “Radiocoms Systems Limited is a mature communications company of some 50 years and is now the UK’s leading independent communications supplier specialising in the design…” Source: RevenueBase Database · checked Sep 13, 2026
9	Powerx Technology	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	46 contacts →
	Indirect evidence “Tower networks are vast and complex systems.” Source: RevenueBase Database · checked Sep 13, 2026
10	Spartified	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	21 contacts →
	Partial evidence “Spartified is a global telecommunications technology company that helps mobile network operators, MVNOs, and digital service providers transform complex network operations into…” Source: RevenueBase Database · checked Sep 13, 2026
11	Jerasoft	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Strong evidence “JeraSoft is a leading developer and integrator of full-featured Billing Software for modern Telecom Operators (VoIP) and IoT/M2M Providers.” Source: RevenueBase Database · checked Sep 13, 2026
12	Carritech Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Partial evidence “Carritech is a telecommunications company which was founded in 2010 by a management team with over 30 years of experience in the carrier industry.” Source: RevenueBase Database · checked Sep 13, 2026
13	Mobihive Labs Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	15 contacts →
	Indirect evidence “A hardcore IT Organisation, we have moved away from traditional office locations to ensure we are completely flexible and easily available to solve your problems as quickly as…” Source: RevenueBase Database · checked Sep 13, 2026
14	A3&o Limited	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	14 contacts →
	Partial evidence “A3 & O, the leading telecommunication System Integrator and Solution Provider; The company provides state of the art technologies and turnkey solutions to its clients across the…” Source: RevenueBase Database · checked Sep 13, 2026
15	Salestar	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	10 contacts →
	Strong evidence “With over 20 years of experience, salestar continues to lead the way in delivering software solutions specifically designed for the telecom, mobile phone, and cellular industries.” Source: RevenueBase Database · checked Sep 13, 2026
16	Exfo Ontology	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Partial evidence “EXFO Ontology is revolutionising how telecommunication network operators get to know their networks – and through this, their customers.” Source: RevenueBase Database · checked Sep 13, 2026
17	Linx-Networks	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	9 contacts →
	Partial evidence “Linx-Networks: Driving Innovation in Trading & Telecom Solutions Linx-Networks is a leading technology and telecommunications provider headquartered in the City of London…” Source: RevenueBase Database · checked Sep 13, 2026
18	Code Technology LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	8 contacts →
	Partial evidence “Code exists to challenge, rethink and refine the selection, procurement and support of mobile telecommunications services for business users.” Source: RevenueBase Database · checked Sep 13, 2026
19	Kbtl Telecoms	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Partial evidence “Established in 2006, KBTL specialises in Telecommunications Systems Delivery across the Rail, Power and General Transportation sectors.” Source: RevenueBase Database · checked Sep 13, 2026
20	OEM Support Solutions	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Partial evidence “Elevate Telecom Excellence with OEM Support Solutions Welcome to OEM Support Solutions, your global telecom support partner.” Source: RevenueBase Database · checked Sep 13, 2026
21	Supportwizard	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	6 contacts →
	Partial evidence “SupportWizard is a Division of ClubWizard Ltd We are an IT and Telecoms company offering a personal in-house technical support service and enhanced telecom solutions for SME's.” Source: RevenueBase Database · checked Sep 13, 2026
22	Dynamic Infrastructure	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	6 contacts →
	Partial evidence “Your trusted and reliable partner in the telecoms industry.” Source: RevenueBase Database · checked Sep 13, 2026
23	Titan Civils LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Partial evidence “What we do: Telecommunications builds: MicroCells, SmallCells, Meter boxes, Cabinets Pre Installation services: Trenching, Ducting, Manholes, Water, Sewerage Streetworks: Meter…” Source: RevenueBase Database · checked Sep 13, 2026
24	JTD Associates LTD	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	4 contacts →
	Strong evidence “JTD Associates is a specialist, London based firm offering experience and expertise across the gamut of telecommunications infrastructure development.” Source: RevenueBase Database · checked Sep 13, 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: telecom infrastructure software 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 telecom infrastructure software companies.
Partial evidence: Its own public description names part of telecom infrastructure software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom infrastructure software 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 24 of 119 telecom infrastructure software companies based in London, United Kingdom

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Telecom infrastructure software companies based in London, United Kingdom at a glance

As of Sep 13, 2026

28.0%Verified-email coverage

3.9%Mobile-number coverage

34.2Average contacts per company

11-50Median size (employees)

97.5%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

8850–30

24531–60

161–90

090–180

6180+

Company record updated

Median 80.0d

00–30

1,23631–60

2,20061–90

47490–180

155180+

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 telecom infrastructure software 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 London, United Kingdom whose own description of what they do matches “telecom infrastructure software 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 telecom infrastructure software 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 telecom infrastructure software companies, and records with no verified work email. Companies headquartered outside London 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, 1,137 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 13, 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.

Telecom infrastructure software companies by metro in the United Kingdom

Telecom infrastructure software companies in London116

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 telecom infrastructure software 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 telecom infrastructure software companies are there based in London, United Kingdom?

RevenueBase identified 119 telecom infrastructure software companies headquartered in London, 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?

Helios Towers, headquartered in London, tops this list with the largest team on record.

Which city has the most telecom infrastructure software companies?

London leads with 116 headquartered companies, followed by Birmingham (14) and Glasgow (11).

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 1,137 verified decision-maker contacts tracked across these 119 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 13, 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.