Company lists · Data refreshed October 2026

Top 25 Call center software as a service companies based in the United Kingdom

RevenueBase identified 135 company matches for call center software as a service companies associated with the United Kingdom as of October 2026 and tracks 3,489 professional contacts across them, including 837 with verified work emails. London is the largest hub.

This list covers company matches for call center software as a service 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 October 19, 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 Oct 19, 2026 How this list was built
135Companies
3,489Contacts tracked
837Verified emails
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The 25 largest call center software as a service companies based in the United Kingdom

Ranked by team size
Top 25 of 135 company matches for call center software as a service companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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 matchKingston Upon Hull, United KingdomHQ recorded Oct 19, 20261,001-5,000512 contacts →

Exact match

“Give your customers a voice with ResQ.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchBracknell, United KingdomHQ recorded Oct 19, 2026501-1,000439 contacts →

Exact match

“Content Guru is a leading global cloud Customer Experience (CX) technology provider and the only ‘challenger’ named in the 2025 Gartner® CCaaS Magic Quadrant™’.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Oct 19, 20261,001-5,000417 contacts →

Exact match

“We've moved!”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchBristol, United KingdomHQ recorded Oct 19, 202651-200168 contacts →

Exact match

“Route 101 offers award-winning customer engagement solutions that help you reduce operational costs, enhance efficiency, and deliver a next-generation customer experience (CX).”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Oct 19, 2026201-500143 contacts →

Exact match

“Echoing our clients in every conversation.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Oct 19, 202651-200124 contacts →

Exact match

“Natterbox is an AI-powered contact center solution that's natively integrated to Salesforce.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchMold, United KingdomHQ recorded Oct 19, 202651-200118 contacts →

Exact match

“Transforming Contact Centers with Real-Time Intelligence Founded in 1993, QPC has spent over three decades at the forefront of contact center innovation.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchCrawley, United KingdomHQ recorded Oct 19, 202651-20071 contacts →

Exact match

“We provide real-time CX (Customer Experience) insights that enhance Service Providers value-added portfolio, helping them drive revenue growth in the cloud communications market.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchBolton, United KingdomHQ recorded Oct 19, 202651-20066 contacts →

Exact match

“Born in Bolton and connected across Europe, Firstcom Europe delivers technology without intimidation, helping businesses communicate, connect, protect and grow through telephony…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchGuildford, United KingdomHQ recorded Oct 19, 202651-20063 contacts →

Exact match

“Nebula is a leading SaaS provider of workplace communications software, delivering powerful, secure, and adaptable solutions and applications for voice, messaging, customer…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchWrexham, United KingdomHQ recorded Oct 19, 202651-20051 contacts →

Exact match

“Orca offers flexible and adaptable call answering and live chat services that help clients manage costs effectively.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchAylesbury, United KingdomHQ recorded Oct 19, 202611-5045 contacts →

Exact match

“Sytel Limited develops and supplies Softdial Contact Center (SCC) multimedia, multichannel, fully blended cloud contact center solutions, for quick and easy deployment by partners…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchEasingwold, United KingdomHQ recorded Oct 19, 202651-20041 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 · Oct 19, 2026 · View company records in RevenueBase
14Exact matchEast Kilbride, United KingdomHQ recorded Oct 19, 202611-5040 contacts →

Exact match

“As the UK and Ireland’s longest serving trusted advisor to the Contact Centre industry, SVL has grown to become a leading provider of unified cloud communications and telephony…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-5039 contacts →

Exact match

“Xinix is UK’s leading cloud-based unified communication provider making persistent efforts towards modernizing business communications.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchCroydon, United KingdomHQ recorded Oct 19, 2026501-1,00037 contacts →

Exact match

“For over 20 years, Chase Response has delivered unrivalled standards in call centre outsourcing and customer management services.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-5035 contacts →

Exact match

“RocketPhone.ai empowers organisations to unlock the full potential of their customer conversations by transforming them into actionable insights.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchChippenham, United KingdomHQ recorded Oct 19, 2026201-50034 contacts →

Exact match

“As a boutique customer service provider, we put customers and colleagues at the heart of everything we do, helping businesses grow by connecting with their customers.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-5031 contacts →

Exact match

“Our customer service outsourcing and software solutions create happier customers, happier customer service agents, and save you money.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchStafford, United KingdomHQ recorded Oct 19, 202651-20027 contacts →

Exact match

“Ctalk develops contact centre software.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchManchester, United KingdomHQ recorded Oct 19, 202611-5027 contacts →

Exact match

“Empower agents and amazing things happen.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Oct 19, 202611-5026 contacts →

Exact match

“Noetica are a provider of Customer Interaction Management software for use in contact centres.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchUnited KingdomHQ recorded Oct 19, 202651-20026 contacts →

Exact match

“Anana delivers advanced customer experience technology and direction.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchRossendale, United KingdomHQ recorded Oct 19, 202651-20022 contacts →

Exact match

“At Mission Labs we have a single vision: to power the future of business communications.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchNorth West, United KingdomHQ recorded Oct 19, 20261,001-5,00021 contacts →

Exact match

“Contact 07541005959 for any enquiries”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 135 call center software as a service companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 837 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Call center software as a service companies based in the United Kingdom at a glance

As of Oct 19, 2026
24.0%Verified-email coverage
25.8Average contacts per company
11-50Median size (employees)
27.4%Largest-city concentration · London
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
57
51-200
33
201-500
8
501-1,000
4
1,001-5,000
3

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 135 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 “call center software as a service 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 837 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 October 19, 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.

Call center software as a service 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 “call center software as a service companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many call center software as a service companies are there based in the United Kingdom?

RevenueBase identified 135 company matches for call center software as a service companies associated with the United Kingdom as of October 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?

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

Which city has the most call center software as a service companies?

London leads with 37 company records, followed by Glasgow (7) and Manchester (7).

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 837 professional contacts with verified work emails tracked across these 135 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 October 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 135 call center software as a service companies 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.