Company lists · Data refreshed September 2026

Top 15 Telecom service assurance software companies based in the United Kingdom

RevenueBase identified 41 company matches for telecom service assurance software companies associated with the United Kingdom as of September 2026 and tracks 1,154 professional contacts across them, including 105 with verified work emails and 174 with mobile numbers. London is the largest hub.

This list covers company matches for telecom service assurance software companies 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 6, 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 6, 2026 How this list was built
41Companies
1,154Contacts tracked
105Verified emails
174Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 15 largest telecom service assurance software companies based in the United Kingdom

Ranked by team size
Top 15 of 41 company matches for telecom service assurance software companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 6, 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 matchNewbury, United KingdomHQ recorded Sep 6, 202611-5028 contacts →

Exact match

“Construction Site Services Ltd (CSS Ltd) prides itself on quality, integrity and performance to deliver bespoke solutions to the ever-changing needs of our clients both new and…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
2Exact matchNewmarket, United KingdomHQ recorded Sep 6, 202611-5013 contacts →

Exact match

“Frame Communications Ltd supplies a wide range of Telecoms Datacoms Test and Management solutions to Network Operators, Equipment Manufacturers, System Integrators, Field Support…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
3Exact matchMargaretting, United KingdomHQ recorded Sep 6, 202611-5012 contacts →

Exact match

“We are a UK-based development company specialising in data capture and communication software solutions.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 6, 2026201-50012 contacts →

Exact match

“We offer award-winning Network Assurance and Service Experience Assurance solutions that enable Communications Service Providers (CSPs), Managed Service Providers (MSPs) and…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
5Exact matchBarnstaple, United KingdomHQ recorded Sep 6, 202611-5012 contacts →

Exact match

“BluGem provide independent test solutions to telecommunication companies for roaming, network service, billing, regulatory compliance and fraud detection.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
6Exact matchMilton Keynes, United KingdomHQ recorded Sep 6, 20261-1010 contacts →

Exact match

“We are a networking communications company that take great pride in saying we are ECSE accredited.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 6, 202611-5010 contacts →

Exact match

“EXFO Ontology is revolutionising how telecommunication network operators get to know their networks – and through this, their customers.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 6, 202611-509 contacts →

Exact match

“Razor | Ensuring World-Class Customer Interactions, Every Time… Everywhere.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
9Exact matchDerby, United KingdomHQ recorded Sep 6, 20261-108 contacts →

Exact match

“From the heart of the Industrial Revolution, Devtank is disrupting the industry with their award-winning production testing and smart monitoring solutions.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 6, 202651-2006 contacts →

Exact match

“ReveNet is a leading provider of network revenue assurance solutions, built by a team of industry veterans who have been at the forefront of telecom innovation for decades.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
11Exact matchGuildford, United KingdomHQ recorded Sep 6, 202611-504 contacts →

Exact match

“SpatialBuzz helps mobile operators engage with their customers to make their networks better.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
12Exact matchCambridge, United KingdomHQ recorded Sep 6, 20261-103 contacts →

Exact match

“Q-Performance Bureau provides real-time benchmarking of mobile network performance for objective comparisons and trends.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 6, 2026201-5002 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 6, 20261-102 contacts →

Exact match

“Cyclone is a unique Cloud base and onPremise Customer Experience Assurance Testing and Monitoring platform which will revolutionise the way you test your media communications.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
15Exact matchDouglas, United KingdomHQ recorded Sep 6, 20261-101 contacts →

Exact match

“Founded in the Isle of Man in 2004, Confideo was built on a single, clear-eyed observation: telecommunications businesses were drowning in fragmented systems, manual processes and…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase

Showing 15 of 41 telecom service assurance software companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 105 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Telecom service assurance software companies based in the United Kingdom at a glance

As of Sep 6, 2026
9.1%Verified-email coverage
15.1%Mobile-number coverage
28.1Average contacts per company
11-50Median size (employees)
26.8%Largest-city concentration · London
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
15
11-50
19
51-200
4
201-500
3

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 service assurance software companies” 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 105 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 6, 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 service assurance software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom service assurance software companies are there based in the United Kingdom?

RevenueBase identified 41 company matches for telecom service assurance software companies 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?

Construction Site Services LTD CSS LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecom service assurance software companies?

London leads with 11 company records, followed by Cambridge (3) and Ampthill (1).

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 105 professional contacts with verified work emails tracked across these 41 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 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 41 telecom service assurance software companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.