Company lists · Data refreshed September 2026

Top 25 Telecom software services based in the United Kingdom

RevenueBase identified 189 company matches for telecom software services associated with the United Kingdom as of September 2026 and tracks 3,526 professional contacts across them, including 819 with verified work emails. London is the largest hub.

This list covers company matches for telecom software services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
189Companies
3,526Contacts tracked
819Verified emails
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The 25 largest telecom software services based in the United Kingdom

Ranked by team size
Top 25 of 189 company matches for telecom software services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500364 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200168 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200125 contacts →

Exact match

“Telesens is a global provider of enterprise level cost effective software products and solutions for telecom and other business domains.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchWarrington, United KingdomHQ recorded Sep 21, 2026201-500113 contacts →

Exact match

“MDS Global powers digital telcos for revenue growth, customer delight, and cost reduction.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchBelfast, United KingdomHQ recorded Sep 21, 202651-20098 contacts →

Exact match

“Barclay Communications is the leading provider of business mobile, landline and digital solutions, supporting small, medium and large organisations across the UK.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20095 contacts →

Exact match

“Programus Limited boast over 15 years of experience developing the world's leading software for the Telecom and Events and Venues industries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20079 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-50064 contacts →

Exact match

“Usha Martin Technologies (UMT) is the technology services arm of the Usha Martin Group, a business conglomerate.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchNewbury, United KingdomHQ recorded Sep 21, 202611-5052 contacts →

Exact match

“We propel telecoms to innovate fearlessly for the last 30 years.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchEasingwold, United KingdomHQ recorded Sep 21, 202651-20049 contacts →

Exact match

“TeleWare design software to help businesses communicate better with their customers and employees by routing communications more effectively.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchElstree, United KingdomHQ recorded Sep 21, 202611-5047 contacts →

Exact match

“Call Systems Technology Ltd (CST) specialises in innovative communication technology and software solutions for organisation across a wide range of sectors, including hospitality…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20039 contacts →

Exact match

“Crown Interactive is a technology Software Solution Company with its head office in Lagos, Nigeria.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchCaterham, United KingdomHQ recorded Sep 21, 202611-5038 contacts →

Exact match

“Tekton Billing develops software that helps service providers simplify, automate and scale.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-50033 contacts →

Exact match

“Proudly established in 2007, Avertec provides reliable technology solutions to help businesses stay connected, specialising in business telecoms, business mobile, landlines and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchCroughton, United KingdomHQ recorded Sep 21, 202651-20029 contacts →

Exact match

“For nearly 30 years, we’ve been delivering benefits to global telecom operators, system integrators, OEMs, government departments and multi-national enterprise companies from our…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchCoventry, United KingdomHQ recorded Sep 21, 202611-5029 contacts →

Exact match

“About Us For over 35 years, HBT Communications has enhanced productivity and financial performance for SMEs through comprehensive IT and Telecoms services, including support…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchMacclesfield, United KingdomHQ recorded Sep 21, 202611-5026 contacts →

Exact match

“Ghekko is an independent international company providing professional services within the Telecommunications hardware market, with operating offices in EMEA & North America.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchBrinkworth, United KingdomHQ recorded Sep 21, 202611-5021 contacts →

Exact match

“Graham Smith UK Ltd has 30 years’ experience of working in the telecoms industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchGlasgow, United KingdomHQ recorded Sep 21, 202611-5020 contacts →

Exact match

“Technology should help businesses deliver projects, support growing teams and reduce risk – not become another obstacle to overcome.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchEastleigh, United KingdomHQ recorded Sep 21, 202611-5020 contacts →

Exact match

“Sirus are a provider of telecommunication products and services to business customers throughout the UK.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchCroydon, United KingdomHQ recorded Sep 21, 202651-20019 contacts →

Exact match

“CHANGING TECHNOLOGIES At NEXUM we adopt an open mind to product and commercial strategy.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5018 contacts →

Exact match

“JeraSoft is a leading developer and integrator of full-featured Billing Software for modern Telecom Operators (VoIP) and IoT/M2M Providers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchBristol, United KingdomHQ recorded Sep 21, 202611-5015 contacts →

Exact match

“Complete Telecoms & IT Solutions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5015 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchWarrington, United KingdomHQ recorded Sep 21, 202611-5014 contacts →

Exact match

“NetEngage has over 30 years' experience in deploying global, telco-grade, real-time solutions and value-added services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 189 telecom software services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 819 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecom software services based in the United Kingdom at a glance

As of Sep 21, 2026
23.2%Verified-email coverage
18.7Average contacts per company
11-50Median size (employees)
28.0%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
83
11-50
75
51-200
24
201-500
6
1,001-5,000
1

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 189 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “telecom software services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 819 professional contacts with verified work emails across the full matched dataset. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “telecom software services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom software services are there based in the United Kingdom?

RevenueBase identified 189 company matches for telecom software services associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Cerillion Technologies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecom software services?

London leads with 53 company records, followed by Bristol (4) and Birmingham (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 819 professional contacts with verified work emails tracked across these 189 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 189 telecom software services based in the United Kingdom. Start with a free account, no credit card.

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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 SmartSearch, 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.