Company lists · Data refreshed November 2026

Top 25 Telecom encryption companies based in the United Kingdom

RevenueBase identified 76 company matches for telecom encryption companies associated with the United Kingdom as of November 2026 and tracks 1,340 professional contacts across them, including 403 with verified work emails. London is the largest hub.

This list covers company matches for telecom encryption 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 November 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 Nov 6, 2026 How this list was built
76Companies
1,340Contacts tracked
403Verified emails
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The 25 largest telecom encryption companies based in the United Kingdom

Ranked by team size
Top 25 of 76 company matches for telecom encryption companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 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 matchIlkley, United KingdomHQ recorded Nov 6, 202611-5059 contacts →

Exact match

“Talk Straight has been looking after the communications and network security for thousands of public and private sector organisations since 2007.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSt. Albans, United KingdomHQ recorded Nov 6, 202651-20037 contacts →

Exact match

“Advanced three-layer, identity based encryption ensures your data and communications stay protected, inside and outside your network.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWellington, United KingdomHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Liverton Security is a trusted cybersecurity provider specialising in secure email solutions and information security consulting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBelfast, United KingdomHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Salt is a secure communications system that provides the best armour organisations have to protect their trade secrets and other sensitive, strategic and proprietary information…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchUk, United KingdomHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Signum Intelligence is a leading UK based solutions provider in the security, information, and telecommunications sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchFareham, United KingdomHQ recorded Nov 6, 202651-20017 contacts →

Exact match

“Deliver sensitive information by email with recipient-first security.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBasingstoke, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“CompTech Solutions Ltd brings together a team of seasoned professionals with a proven track record in delivering innovative solutions for complex defence challenges.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAylesbury, United KingdomHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Citytalk are a trusted Telecoms, IT & Security provider based in Aylesbury, Buckinghamshire.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLivingston, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Wellwood Communications provide 3 key services: 1.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLeeds, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“BlackDice Cyber helps telcos turn their networks into platforms of trust.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBelper, United KingdomHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Cyber1st is a research and development company based out of Belper, Derbyshire, United Kingdom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchManchester, United KingdomHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Welcome to our company page.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-507 contacts →

Exact match

“We are a global telecommunications carrier, delivering specialised telecommunication services to government agencies and commercial entities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-106 contacts →

Exact match

“At Qrispy, our mission is to revolutionize the communication and telecommunications industry with innovative and secure solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSolihull, United KingdomHQ recorded Nov 6, 2026501-1,0005 contacts →

Exact match

“Since Wavenet has been keeping organisations connected.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWetherby, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“With a belief that the security of IT systems and networks is of primary importance to any business, Atomos Networks was created to deliver world class networks and network…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Krestfield is a UK-based provider of enterprise-grade PKI and certificate management software.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchOxford, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“ID-3 is an Oxford-based data security consultancy, software developer and specialist hardware reseller.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMerthyr Tydfil, United KingdomHQ recorded Nov 6, 202611-503 contacts →

Exact match

“We are a certified flagship Telecommunications, IT Network and Security firm based in South Wales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Essential Security is a unique company in that we offer a specialised and confidential service meeting your bespoke technological and communications requirements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-502 contacts →

Exact match

“Cell Guard is a secure communications company based in London and Warsaw manufacturing encrypted smartphones and developers of various IP registered secure smartphone applications…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Centilon Limited provides leading edge security solutions, consultancy and bespoke training to organisations that have a requirement to secure & manage their network…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBordon, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Protect CSM offer ideal solutions in Electronic security and Networking.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Pie Security helps organisations to implement email security and encryption solutions that provide assurances that your email communication between customers and suppliers is…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Alion4 is a leading provider of holistic enterprise-level IT security solutions.”

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

Showing 25 of 76 telecom encryption companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 403 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecom encryption companies based in the United Kingdom at a glance

As of Nov 6, 2026
30.1%Verified-email coverage
17.6Average contacts per company
11-50Median size (employees)
42.1%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
33
11-50
27
51-200
9
201-500
1
501-1,000
4
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 76 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 encryption 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 403 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 November 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.

Telecom encryption companies by metro

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 encryption companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom encryption companies are there based in the United Kingdom?

RevenueBase identified 76 company matches for telecom encryption companies associated with the United Kingdom as of November 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?

Talk Straight Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecom encryption companies?

London leads with 32 company records, followed by Aldershot (1) and Aylesbury (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 403 professional contacts with verified work emails tracked across these 76 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 November 6, 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 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.