Company lists · Data refreshed September 2026

Top 25 Telecommunications api providers based in the United Kingdom

Name: Telecommunications api providers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 113 companies tracked

RevenueBase identified 113 telecommunications api providers headquartered in the United Kingdom as of September 2026 and tracks 1,969 professional contacts across them, including 338 with verified work emails. London is the largest hub.

This list covers telecommunications api providers 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 19, 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 19, 2026 86% judged on-target in blind review

113Companies

1,969Contacts tracked

338Verified emails

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The 25 largest telecommunications api providers based in the United Kingdom

Ranked by team size

Top 25 of 113 telecommunications api providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications api providers: 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	Radius Connect Solutions	Indirect evidence	Crewe, United KingdomHQ checked Sep 19, 2026	201-500	122 contacts →
	Indirect evidence “Radius Connect Solutions is an award-winning independent “total communications” solution provider.” Source: RevenueBase Database · checked Sep 19, 2026
2	Tyntec	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	103 contacts →
	Indirect evidence “tyntec is a cloud communications provider enabling businesses to communicate easier with their customers, workforce and machines.” Source: RevenueBase Database · checked Sep 19, 2026
3	Wavecrest	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	93 contacts →
	Indirect evidence “Wavecrest is a global managed voice and messaging services company.” Source: RevenueBase Database · checked Sep 19, 2026
4	Speedflow	Indirect evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
5	Manor Telecom	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “Manor IT (UK) Limited is an esteemed industry leader, specializing in global wholesale and retail Voice & SMS termination and Communications Platform as a Service (CPaaS).” Source: RevenueBase Database · checked Sep 19, 2026
6	Microtalk	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	45 contacts →
	Indirect evidence “Microtalk: Global Communications Made Simple For over 15 years, Microtalk has delivered reliable voice, messaging, and cloud communications to businesses worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
7	Esendex	Indirect evidence	Nottingham, United KingdomHQ checked Sep 19, 2026	201-500	41 contacts →
	Indirect evidence “Esendex is a premier global provider of business communication solutions, specialising in Mobile Messaging.” Source: RevenueBase Database · checked Sep 19, 2026
8	Pinevox	Indirect evidence	Harrow, United KingdomHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “With a legacy rooted in two decades of telecom consulting and services expertise, PineVox emerges as a visionary leader in the industry.” Source: RevenueBase Database · checked Sep 19, 2026
9	Annecto Telecom	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Since 2003, we’ve been making SMS & Voice simple and profitable for our partners.” Source: RevenueBase Database · checked Sep 19, 2026
10	Magrathea Telecommunications LTD	Indirect evidence	Theale, United KingdomHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Magrathea have been wholesale VoIP experts for over 25 years.” Source: RevenueBase Database · checked Sep 19, 2026
11	Fibre Telecoms UK	Indirect evidence	Southampton, United KingdomHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “With over 30 years of experience in the telecoms industry we specialise in the installation of award-winning phone systems from some of the biggest names like Samsung, Siemens…” Source: RevenueBase Database · checked Sep 19, 2026
12	Talk Telecom LTD	Partial evidence	High Wycombe, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Talk Telecom Ltd is a leading independent unified telecommunications provider who equips small, medium and large enterprise customers with the telecoms infrastructure required to…” Source: RevenueBase Database · checked Sep 19, 2026
13	SCG Solutions	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	201-500	20 contacts →
	Indirect evidence “2 Circles Solutions have partnered with SCG Communications, NSN & Hello Telecom, creating 'SCG Solutions' creating a supercharged service provider with over 50 years of combined…” Source: RevenueBase Database · checked Sep 19, 2026
14	Qxtel Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “QXTEL is one of the most advanced & diversified Telecommunications & Technology Services Provider focused on Retail & Wholesale Voice Platform Partioning, Wholesale Carrier Voice…” Source: RevenueBase Database · checked Sep 19, 2026
15	Airtime Solutions LTD	Partial evidence	Bridgnorth, United KingdomHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “17 Years of Telecommunications Excellence: Specialising in Cloud-Based Solutions to Keep You Connected to Your Customers and Colleagues Before the 2025 Switch-Off.” Source: RevenueBase Database · checked Sep 19, 2026
16	Agility Communications	Indirect evidence	Ormskirk, United KingdomHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Agility Communications is here to revolutionize how businesses in the UK navigate the world of technology and communications.” Source: RevenueBase Database · checked Sep 19, 2026
17	Millgate Connect	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “At Millgate Connect, we help organisations simplify communications and connectivity.” Source: RevenueBase Database · checked Sep 19, 2026
18	MI Telecom	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “We connect millions of telephone calls for businesses each year, with our modern cloud technology and easy to use platforms.” Source: RevenueBase Database · checked Sep 19, 2026
19	Blue Portal Group	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “At Blue Portal, we take the hassle out of business telecoms by offering everything you need under one roof.” Source: RevenueBase Database · checked Sep 19, 2026
20	Icom Voice LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “ICOM VOICE is one of the most promising Telecommunication Service Providers based in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
21	Cliqnet Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Cliqnet Limited is a trusted international telecommunications partner offering a full range of services within the global telecommunications market.” Source: RevenueBase Database · checked Sep 19, 2026
22	Simwood	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Simwood: API-first, infrastructure-based, UK & US domestic carrier.” Source: RevenueBase Database · checked Sep 19, 2026
23	Smile Telecoms LTD	Partial evidence	Prestwich, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Our telecoms company provides exceptional B2B telecommunications services, including mobile, VoIP, and broadband solutions.” Source: RevenueBase Database · checked Sep 19, 2026
24	MID Digital Solutions	Indirect evidence	Middleton, United KingdomHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “By working with our strategic partners, we help our customers in 3 ways… Firstly, MOBILE, as one of O2's largest UK franchise partners we're passionate about providing businesses…” Source: RevenueBase Database · checked Sep 19, 2026
25	Supported Business	Indirect evidence	Chelmsford, United KingdomHQ checked Sep 19, 2026	51-200	7 contacts →
	Indirect evidence “We provide a complete package of innovative premium rate, SMS and corporate telecoms communications solutions, from revenue-generating premium rate and SMS network services, to…” Source: RevenueBase Database · checked Sep 19, 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: telecommunications api providers. 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 telecommunications api providers.
Partial evidence: Its own public description names part of telecommunications api providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications api providers. 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 113 telecommunications api providers based in the United Kingdom

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Telecommunications api providers based in the United Kingdom at a glance

As of Sep 19, 2026

17.2%Verified-email coverage

17.4Average contacts per company

11-50Median size (employees)

37.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 113 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 telecommunications api providers, 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 “telecommunications api providers”. 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 telecommunications api providers), 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 telecommunications api providers, 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, 338 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 19, 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.

Telecommunications api providers by metro

Telecommunications api providers in London42

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 telecommunications api providers, 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 telecommunications api providers are there based in the United Kingdom?

RevenueBase identified 113 telecommunications api providers 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?

Radius Connect Solutions, headquartered in Crewe, tops this list with the largest team on record.

Which city has the most telecommunications api providers?

London leads with 42 headquartered companies, followed by Birmingham (4) and Coventry (3).

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 338 verified decision-maker contacts tracked across these 113 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 19, 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.