Company lists · Data refreshed September 2026
Top 21 Inside sales call centers based in the United Kingdom
RevenueBase identified 90 company matches for inside sales call centers associated with the United Kingdom as of September 2026 and tracks 1,533 professional contacts across them, including 191 with verified work emails. London is the largest hub.
This list covers company matches for inside 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 September 28, 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.
The 21 largest inside sales call centers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 243 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 132 contacts → | ||||
Exact match “Dedicated and shared contact centre outsourcing operations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 114 contacts → | ||||
Exact match “EC Outsourcing is one of the UK's leading outsourced contact centres.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 112 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 82 contacts → | ||||
Exact match “Alliance Sales Support Services provides effective and sustainable sales solutions for your business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 54 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 48 contacts → | ||||
Exact match “At Fly Pie, sales outsourcing isn’t a “done-for-you” service, it’s a growth engine we build with you.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 35 contacts → | ||||
Exact match “1 Stop Data offers the best of breed Marketing, Lead Generation and Call Centre services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 32 contacts → | ||||
Exact match “Telu is the complete business solution for generating leads and revenue for your business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 9 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 8 contacts → | ||||
Exact match “Welcome to The Belling Desk – where your data meets real results.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 6 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 6 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 5 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 5 contacts → | ||||
Exact match “Virtual Sales Ltd (VSL) offers lead generation, appointment setting, telemarketing, telesales services to B2B companies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 3 contacts → | ||||
Exact match “Blitz offer many telemarketing services from outbound lead generation and lead nurturing, to inbound call handling and multi-lingual campaigns.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “BDM Talk is an Inbound & Outbound Contact Centre.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match “Pinagli Telemarketing was founded in 1992, and operates on behalf of professional and commercial companies who wish to make direct telephone contact with current and potential…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match “At Niche, it is not about the number of calls made but about quality.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “A dynamic and innovative marketing service specialising in delivering qualified sales calls, tailored to your exact target market.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “CTS offers a bespoke Telemarketing and Telesales Nationwide service.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “inside sales call centers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 21 of 90 inside sales call centers based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 191 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Inside sales call centers based in the United Kingdom at a glance
As of Sep 28, 2026Companies by employee count
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 90 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 “inside 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 191 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 28, 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 “inside sales call centers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many inside sales call centers are there based in the United Kingdom?
RevenueBase identified 90 company matches for inside sales call centers 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?
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 inside sales call centers?
London leads with 20 company records, followed by Bristol (4) and Leeds (3).
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 191 professional contacts with verified work emails tracked across these 90 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 90 inside sales call centers based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Inside sales call centers by geography
- Inside sales call centers based in Canada
- Inside sales call centers based in France
- Inside sales call centers based in Germany
- Inside sales call centers based in India
- Inside sales call centers based in the Netherlands
- Inside sales call centers based in Spain
- Inside sales call centers based in the United States
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Inside sales call centers based in Canada
- Inside sales call centers based in France
- Inside sales call centers based in Germany
- Inside sales call centers based in India
- Inside sales call centers based in the Netherlands
- Inside sales call centers based in Spain
Company intelligence · public preview
Top 21 inside sales call centers based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 90 matching company records for inside sales call centers based in the United Kingdom, with 1,533 tracked contacts and 191 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 inside sales call centers based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  The Telemarketing Companyttmc.co.ukHQ: Brighton, United KingdomReported employees: 201-500 | Brighton, United Kingdom | 201-500 | Exact match | 243 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  We ARE Wovenwearewoven.comHQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 132 contacts → |
“Dedicated and shared contact centre outsourcing operations.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  EC Outsourcing Powered By Ison Xperiencesecoutsourcing.co.ukHQ: Doxford International Business Park, United KingdomReported employees: 1,001-5,000 | Doxford International Business Park, United Kingdom | 1,001-5,000 | Exact match | 114 contacts → |
“EC Outsourcing is one of the UK's leading outsourced contact centres.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Step Change Outsourcingstepchangeoutsourcing.co.ukHQ: Stevenage, United KingdomReported employees: 201-500 | Stevenage, United Kingdom | 201-500 | Exact match | 112 contacts → |
“Step Change Outsourcing is a growing contact centre working in partnership with some of the UK’s largest brands for over 15 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Alliance Sales Support Services Limitedalliancesalessupport.comHQ: Tunbridge Wells, United KingdomReported employees: 51-200 | Tunbridge Wells, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Alliance Sales Support Services provides effective and sustainable sales solutions for your business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Impact Call Centreimpactcallcentre.co.ukHQ: Romsey, United KingdomReported employees: 201-500 | Romsey, United Kingdom | 201-500 | Exact match | 54 contacts → |
“We are an established AI-enabled call centre specialising in every aspect of sales and customer service.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  FLY PIE LTDflypie.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 48 contacts → |
“At Fly Pie, sales outsourcing isn’t a “done-for-you” service, it’s a growth engine we build with you.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  1 Stop Data LTD1stopdata.comHQ: Ewell, United KingdomReported employees: 51-200 | Ewell, United Kingdom | 51-200 | Exact match | 35 contacts → |
“1 Stop Data offers the best of breed Marketing, Lead Generation and Call Centre services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | TELUtelu.co HQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Telu is the complete business solution for generating leads and revenue for your business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Outshineoutshineoutsource.comHQ: Bolton, United KingdomReported employees: 11-50 | Bolton, United Kingdom | 11-50 | Exact match | 9 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  The Belling Deskthebellingdesk.comHQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Welcome to The Belling Desk – where your data meets real results.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Interactive Marketing UK Limitedinteractivemarketing.co.ukHQ: Cheam, United KingdomReported employees: 51-200 | Cheam, United Kingdom | 51-200 | Exact match | 6 contacts → |
“Interactive Marketing has over 20 years’ experience in providing an inbound and outbound call service specialising in customer relationship and database management.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Prospect Engine Groupprospectengine.co.ukHQ: Newcastle Upon Tyne, United KingdomReported employees: 11-50 | Newcastle Upon Tyne, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Here at Prospect Engine we pride ourselves on delivering the highest standard of customer care to both our clients and their customers.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Onwards Answeringonwardsanswering.co.ukHQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 5 contacts → |
“At Onwards Answering we pride ourselves in knowing that what we offer is guaranteed to increase your turnover.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Virtual Sales Limitedvirtual-sales.com HQ: Horsham, United KingdomReported employees: 11-50 | Horsham, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Virtual Sales Ltd (VSL) offers lead generation, appointment setting, telemarketing, telesales services to B2B companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Blitz Telemarketing LTDblitz-it.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Blitz offer many telemarketing services from outbound lead generation and lead nurturing, to inbound call handling and multi-lingual campaigns.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | BDM Talkbdm-talk.co.uk HQ: Burgess Hill, United KingdomReported employees: 51-200 | Burgess Hill, United Kingdom | 51-200 | Exact match | 2 contacts → |
“BDM Talk is an Inbound & Outbound Contact Centre.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Pinagli Telemarketingpinagli.co.uk HQ: Bromley, United KingdomReported employees: 1-10 | Bromley, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Pinagli Telemarketing was founded in 1992, and operates on behalf of professional and commercial companies who wish to make direct telephone contact with current and potential…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Niche Marketing LTDnichemarketinggroup.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“At Niche, it is not about the number of calls made but about quality.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | DYT Mediadytmedia.co.uk HQ: Northamptonshire, United KingdomReported employees: 1-10 | Northamptonshire, United Kingdom | 1-10 | Exact match | 1 contacts → |
“A dynamic and innovative marketing service specialising in delivering qualified sales calls, tailored to your exact target market.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Catriona Telemarketing Service CTScatrionatelemktg.co.uk HQ: Houghton Conquest, United KingdomReported employees: 1-10 | Houghton Conquest, United Kingdom | 1-10 | Exact match | 1 contacts → |
“CTS offers a bespoke Telemarketing and Telesales Nationwide service.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 90 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Inside sales call centers: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
90 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 90 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for inside sales call centers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many inside sales call centers did RevenueBase find based in the United Kingdom?
The saved snapshot records 90 matching company records, 1,533 tracked contacts and 191 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Inside sales call centers by geography
- Inside sales call centers based in Canada
- Inside sales call centers based in France
- Inside sales call centers based in Germany
- Inside sales call centers based in India
- Inside sales call centers based in the Netherlands
- Inside sales call centers based in Spain
- Inside sales call centers based in the United States
Cite this list
RevenueBase Data Team. Top 21 inside sales call centers based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/inside-sales-call-centers/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Inside sales call centers based in Canada
- Inside sales call centers based in France
- Inside sales call centers based in Germany
- Inside sales call centers based in India
- Inside sales call centers based in the Netherlands
- Inside sales call centers based in Spain
Company intelligence · public preview
Top 21 inside sales call centers based in the United Kingdom
RevenueBase records 90 matching company records for inside sales call centers based in the United Kingdom, with 1,533 tracked contacts and 191 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 inside sales call centers based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | The Telemarketing Companyttmc.co.uk HQ: Brighton, United KingdomReported employees: 201-500 | Brighton, United Kingdom | 201-500 | Exact match | 243 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | We ARE Wovenwearewoven.com HQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 132 contacts → |
“Dedicated and shared contact centre outsourcing operations.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | EC Outsourcing Powered By Ison Xperiencesecoutsourcing.co.uk HQ: Doxford International Business Park, United KingdomReported employees: 1,001-5,000 | Doxford International Business Park, United Kingdom | 1,001-5,000 | Exact match | 114 contacts → |
“EC Outsourcing is one of the UK's leading outsourced contact centres.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Step Change Outsourcingstepchangeoutsourcing.co.uk HQ: Stevenage, United KingdomReported employees: 201-500 | Stevenage, United Kingdom | 201-500 | Exact match | 112 contacts → |
“Step Change Outsourcing is a growing contact centre working in partnership with some of the UK’s largest brands for over 15 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Alliance Sales Support Services Limitedalliancesalessupport.com HQ: Tunbridge Wells, United KingdomReported employees: 51-200 | Tunbridge Wells, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Alliance Sales Support Services provides effective and sustainable sales solutions for your business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Impact Call Centreimpactcallcentre.co.uk HQ: Romsey, United KingdomReported employees: 201-500 | Romsey, United Kingdom | 201-500 | Exact match | 54 contacts → |
“We are an established AI-enabled call centre specialising in every aspect of sales and customer service.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | FLY PIE LTDflypie.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 48 contacts → |
“At Fly Pie, sales outsourcing isn’t a “done-for-you” service, it’s a growth engine we build with you.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 1 Stop Data LTD1stopdata.com HQ: Ewell, United KingdomReported employees: 51-200 | Ewell, United Kingdom | 51-200 | Exact match | 35 contacts → |
“1 Stop Data offers the best of breed Marketing, Lead Generation and Call Centre services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | TELUtelu.co HQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Telu is the complete business solution for generating leads and revenue for your business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Outshineoutshineoutsource.com HQ: Bolton, United KingdomReported employees: 11-50 | Bolton, United Kingdom | 11-50 | Exact match | 9 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | The Belling Deskthebellingdesk.com HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Welcome to The Belling Desk – where your data meets real results.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Interactive Marketing UK Limitedinteractivemarketing.co.uk HQ: Cheam, United KingdomReported employees: 51-200 | Cheam, United Kingdom | 51-200 | Exact match | 6 contacts → |
“Interactive Marketing has over 20 years’ experience in providing an inbound and outbound call service specialising in customer relationship and database management.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Prospect Engine Groupprospectengine.co.uk HQ: Newcastle Upon Tyne, United KingdomReported employees: 11-50 | Newcastle Upon Tyne, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Here at Prospect Engine we pride ourselves on delivering the highest standard of customer care to both our clients and their customers.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Onwards Answeringonwardsanswering.co.uk HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 5 contacts → |
“At Onwards Answering we pride ourselves in knowing that what we offer is guaranteed to increase your turnover.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Virtual Sales Limitedvirtual-sales.com HQ: Horsham, United KingdomReported employees: 11-50 | Horsham, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Virtual Sales Ltd (VSL) offers lead generation, appointment setting, telemarketing, telesales services to B2B companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Blitz Telemarketing LTDblitz-it.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Blitz offer many telemarketing services from outbound lead generation and lead nurturing, to inbound call handling and multi-lingual campaigns.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | BDM Talkbdm-talk.co.uk HQ: Burgess Hill, United KingdomReported employees: 51-200 | Burgess Hill, United Kingdom | 51-200 | Exact match | 2 contacts → |
“BDM Talk is an Inbound & Outbound Contact Centre.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Pinagli Telemarketingpinagli.co.uk HQ: Bromley, United KingdomReported employees: 1-10 | Bromley, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Pinagli Telemarketing was founded in 1992, and operates on behalf of professional and commercial companies who wish to make direct telephone contact with current and potential…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Niche Marketing LTDnichemarketinggroup.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“At Niche, it is not about the number of calls made but about quality.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | DYT Mediadytmedia.co.uk HQ: Northamptonshire, United KingdomReported employees: 1-10 | Northamptonshire, United Kingdom | 1-10 | Exact match | 1 contacts → |
“A dynamic and innovative marketing service specialising in delivering qualified sales calls, tailored to your exact target market.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Catriona Telemarketing Service CTScatrionatelemktg.co.uk HQ: Houghton Conquest, United KingdomReported employees: 1-10 | Houghton Conquest, United Kingdom | 1-10 | Exact match | 1 contacts → |
“CTS offers a bespoke Telemarketing and Telesales Nationwide service.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 90 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Inside sales call centers: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
90 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 90 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for inside sales call centers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many inside sales call centers did RevenueBase find based in the United Kingdom?
The saved snapshot records 90 matching company records, 1,533 tracked contacts and 191 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Inside sales call centers by geography
- Inside sales call centers based in Canada
- Inside sales call centers based in France
- Inside sales call centers based in Germany
- Inside sales call centers based in India
- Inside sales call centers based in the Netherlands
- Inside sales call centers based in Spain
- Inside sales call centers based in the United States
Cite this list
RevenueBase Data Team. Top 21 inside sales call centers based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/inside-sales-call-centers/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Inside sales call centers based in Canada
- Inside sales call centers based in France
- Inside sales call centers based in Germany
- Inside sales call centers based in India
- Inside sales call centers based in the Netherlands
- Inside sales call centers based in Spain