Company lists · Data refreshed November 2026

Top 25 Inbound sales call centers based in the United Kingdom

RevenueBase identified 151 company matches for inbound sales call centers associated with the United Kingdom as of November 2026 and tracks 2,207 professional contacts across them, including 374 with verified work emails. London is the largest hub.

This list covers company matches for inbound sales call centers 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 5, 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 5, 2026 How this list was built
151Companies
2,207Contacts tracked
374Verified emails
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The 25 largest inbound sales call centers based in the United Kingdom

Ranked by team size
Top 25 of 151 company matches for inbound sales call centers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchBrighton, United KingdomHQ recorded Nov 5, 2026201-500280 contacts →

Exact match

“The Telemarketing Company is one of the UK's most trusted telemarketing agencies, delivering flexible, high-quality voice services, including pre and post sales research…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchHull, United KingdomHQ recorded Nov 5, 2026501-1,000205 contacts →

Exact match

“Established since 1998 Clearanswer is an expert provider of contact centre solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBristol, United KingdomHQ recorded Nov 5, 20261,001-5,000148 contacts →

Exact match

“Dedicated and shared contact centre outsourcing operations.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchExeter, United KingdomHQ recorded Nov 5, 202651-200120 contacts →

Exact match

“Established in 2016, Air Marketing is a specialist B2B outsourced sales and lead generation partner.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchStevenage, United KingdomHQ recorded Nov 5, 2026201-500118 contacts →

Exact match

“Step Change Outsourcing is a growing contact centre working in partnership with some of the UK’s largest brands for over 15 years.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchBanbury, United KingdomHQ recorded Nov 5, 202651-20069 contacts →

Exact match

“At Contact Web, we deliver customer experience outsourcing differently.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchRomsey, United KingdomHQ recorded Nov 5, 2026201-50058 contacts →

Exact match

“We are an established AI-enabled call centre specialising in every aspect of sales and customer service.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchEllesmere Port, United KingdomHQ recorded Nov 5, 202651-20054 contacts →

Exact match

“Advance Connects are a B2B telemarketing, lead generation & appointment scheduling experts, operating within various sectors including construction, built environment, industrial…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLeeds, United KingdomHQ recorded Nov 5, 202651-20046 contacts →

Exact match

“B2B and B2C outsourced Telemarketing agency.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchCroydon, United KingdomHQ recorded Nov 5, 2026501-1,00040 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 · Nov 5, 2026 · View company records in RevenueBase
11Exact matchEwell, United KingdomHQ recorded Nov 5, 202651-20038 contacts →

Exact match

“1 Stop Data offers the best of breed Marketing, Lead Generation and Call Centre services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchMacclesfield, United KingdomHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“Helping you develop a customer-focused business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLeeds, United KingdomHQ recorded Nov 5, 202651-20024 contacts →

Exact match

“Telu is the complete business solution for generating leads and revenue for your business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchMansfield, United KingdomHQ recorded Nov 5, 202651-20019 contacts →

Exact match

“CommLink is a UK inbound call centre providing 24 x 7 support to businesses throughout the UK and in the US.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchStourbridge, United KingdomHQ recorded Nov 5, 20261-1013 contacts →

Exact match

“Sales people deserve better leads.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“Experts in having great conversations, REAL Calling are part of the REAL Family that has been delivering industry-leading face to face fundraising for over 13 years in the UK.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchBolton, United KingdomHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“For over 11 years, Outshine has helped companies scale through effective sales outreach - without the need to build or grow an in-house sales team.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchNottingham, United KingdomHQ recorded Nov 5, 202611-508 contacts →

Exact match

“Prospecting Dynamics was formed to meet a need in the Automotive market, with a purpose of delivering market leading customer experience, and enhancing customer communications.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLeeds, United KingdomHQ recorded Nov 5, 202611-507 contacts →

Exact match

“Welcome to The Belling Desk – where your data meets real results.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchBury St Edmunds, United KingdomHQ recorded Nov 5, 20261-107 contacts →

Exact match

“Your Telemarketing is a specialist telemarketing agency, offering a personal, flexible and effective communications service to help your business generate leads, introduce your…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchPortsmouth, United KingdomHQ recorded Nov 5, 20261-107 contacts →

Exact match

“We generate high quality sales & sale ready appointments with our cost effective, well-planned, well-executed, professional outbound lead generation campaigns.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchCheam, United KingdomHQ recorded Nov 5, 202651-2006 contacts →

Exact match

“Interactive Marketing has over 20 years’ experience in providing an inbound and outbound call service specialising in customer relationship and database management.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Nov 5, 202611-506 contacts →

Exact match

“Here at Prospect Engine we pride ourselves on delivering the highest standard of customer care to both our clients and their customers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchKings Lynn, United KingdomHQ recorded Nov 5, 20261-105 contacts →

Exact match

“WHAT WE DO: Fill your calendar with warm inbound leads completely done-for-you.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchGlasgow, United KingdomHQ recorded Nov 5, 20261-104 contacts →

Exact match

“At Onwards Answering we pride ourselves in knowing that what we offer is guaranteed to increase your turnover.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 151 inbound sales call centers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 374 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Inbound sales call centers based in the United Kingdom at a glance

As of Nov 5, 2026
16.9%Verified-email coverage
14.6Average contacts per company
11-50Median size (employees)
21.2%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
69
11-50
39
51-200
23
201-500
9
501-1,000
5
1,001-5,000
2

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 151 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 “inbound sales call centers” 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 374 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 5, 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.

Inbound sales call centers 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 “inbound sales call centers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many inbound sales call centers are there based in the United Kingdom?

RevenueBase identified 151 company matches for inbound sales call centers 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?

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

Which city has the most inbound sales call centers?

London leads with 32 company records, followed by Leeds (7) and Manchester (5).

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 374 professional contacts with verified work emails tracked across these 151 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 5, 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.