Company lists · Data refreshed September 2026
Top 25 Inside sales outsourcers based in the United Kingdom
RevenueBase identified 806 company matches for inside sales outsourcers associated with the United Kingdom as of September 2026 and tracks 8,349 professional contacts across them, including 1,607 with verified work emails. London is the largest hub.
This list covers company matches for inside sales outsourcers 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 25 largest inside sales outsourcers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 490 contacts → | ||||
Exact match “Give your customers a voice with ResQ.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 358 contacts → | ||||
Exact match “At Algominds, we build AI agents that find you customers who already want to buy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 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 | |||||
| 4 | 205 contacts → | ||||
Exact match “EngageTech is the leading sales development partner for complex B2B technology companies operating in multi-stakeholder, enterprise sales environments.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 164 contacts → | ||||
Exact match “Inside is a global agency dedicated to delivering growth and revenue opportunities for B2B tech companies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 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 | |||||
| 7 | 122 contacts → | ||||
Exact match “Most B2B pipeline problems aren't a volume problem.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 116 contacts → | ||||
Exact match “Since 2016, Air Marketing has been the trusted outsourced sales and lead generation agency in the UK for ambitious B2B businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 115 contacts → | ||||
Exact match “More than SDR Outsourcing.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 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 | |||||
| 11 | 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 | |||||
| 12 | 104 contacts → | ||||
Exact match “Flowd is an award-winning sales prospecting specialist based in the UK, Europe & US.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 90 contacts → | ||||
Exact match “A world class offshore outsourcing agency, with offices in London and Harare, we have access to some of the best educated, best spoken graduates you will find anywhere in the…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 83 contacts → | ||||
Exact match “We are Subfero.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 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 | |||||
| 16 | 65 contacts → | ||||
Exact match “Excelerate360 offers business development and sales outsourcing services for B2B software and technology companies in the UK, Europe, and North America.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 62 contacts → | ||||
Exact match “Support Adventure is an outsourcing company that specializes in customer service and support.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 59 contacts → | ||||
Exact match “Looking to fill your calendar with qualified calls?” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 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 | |||||
| 20 | 54 contacts → | ||||
Exact match “European Sales Outsourcing, B2B Lead Generation, European Business Development.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 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 | |||||
| 22 | 47 contacts → | ||||
Exact match “4Marketing is a direct marketing agency devoted to generating new business opportunities for its clients through its focused new generation of telemarketing professionals.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 45 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 44 contacts → | ||||
Exact match “With over three decades of experience, we partner with B2B sales and marketing teams to drive and nurture new customer acquisition - securing conversations with the right…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 43 contacts → | ||||
Exact match “Beanstalk is an integrated B2B Telemarketing and Lead Generation agency dedicated to helping our customers win new business.” 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 outsourcers”. 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 25 of 806 inside sales outsourcers based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 1,607 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Inside sales outsourcers 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 806 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 outsourcers” 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 1,607 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.
Inside sales outsourcers 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 “inside sales outsourcers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many inside sales outsourcers are there based in the United Kingdom?
RevenueBase identified 806 company matches for inside sales outsourcers 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?
RESQ tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most inside sales outsourcers?
London leads with 268 company records, followed by Manchester (39) and Birmingham (16).
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 1,607 professional contacts with verified work emails tracked across these 806 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 806 inside sales outsourcers based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Inside sales outsourcers by geography
- Inside sales outsourcers based in Melbourne, Australia
- Inside sales outsourcers based in Sydney, Australia
- Inside sales outsourcers based in Sao Paulo, Brazil
- Inside sales outsourcers based in Toronto, Canada
- Inside sales outsourcers based in Helsinki, Finland
- Inside sales outsourcers based in Paris, France
- Inside sales outsourcers based in Berlin, Germany
- Inside sales outsourcers based in Bangalore, India
- Inside sales outsourcers based in Pune, India
- Inside sales outsourcers based in Singapore, Singapore
- Inside sales outsourcers based in Cape Town, South Africa
- Inside sales outsourcers based in Barcelona, Spain
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 outsourcers based in Melbourne, Australia
- Inside sales outsourcers based in Sydney, Australia
- Inside sales outsourcers based in Sao Paulo, Brazil
- Inside sales outsourcers based in Toronto, Canada
- Inside sales outsourcers based in Helsinki, Finland
- Inside sales outsourcers based in Paris, France
Company intelligence · public preview
Top 25 inside sales outsourcers 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 806 matching company records for inside sales outsourcers based in the United Kingdom, with 8,349 tracked contacts and 1,607 verified work emails.
This public preview shows 25 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 25 inside sales outsourcers 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 |  RESQresqcs.co.ukHQ: Kingston Upon Hull, United KingdomReported employees: 1,001-5,000 | Kingston Upon Hull, United Kingdom | 1,001-5,000 | Exact match | 490 contacts → |
“Give your customers a voice with ResQ.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Algomindsalgominds.aiHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 358 contacts → |
“At Algominds, we build AI agents that find you customers who already want to buy.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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. | |||||
| 4 |  Engagetechengagetech.ioHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 205 contacts → |
“EngageTech is the leading sales development partner for complex B2B technology companies operating in multi-stakeholder, enterprise sales environments.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Inside Globalinside-global.comHQ: Liverpool, United KingdomReported employees: 51-200 | Liverpool, United Kingdom | 51-200 | Exact match | 164 contacts → |
“Inside is a global agency dedicated to delivering growth and revenue opportunities for B2B tech companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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. | |||||
| 7 |  PUNCHpunchb2b.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 122 contacts → |
“Most B2B pipeline problems aren't a volume problem.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  AIR Marketingair-marketing.co.ukHQ: Exeter, United KingdomReported employees: 51-200 | Exeter, United Kingdom | 51-200 | Exact match | 116 contacts → |
“Since 2016, Air Marketing has been the trusted outsourced sales and lead generation agency in the UK for ambitious B2B businesses.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Durhamlanedurhamlane.comHQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 115 contacts → |
“More than SDR Outsourcing.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  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. | |||||
| 11 |  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. | |||||
| 12 |  FLOWDflowd.co.ukHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 104 contacts → |
“Flowd is an award-winning sales prospecting specialist based in the UK, Europe & US.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Youpro Contactyouprocontact.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 90 contacts → |
“A world class offshore outsourcing agency, with offices in London and Harare, we have access to some of the best educated, best spoken graduates you will find anywhere in the…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Subferosubfero.comHQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 83 contacts → |
“We are Subfero.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  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. | |||||
| 16 |  Excelerate360excelerate360.comHQ: Hitchin, United KingdomReported employees: 51-200 | Hitchin, United Kingdom | 51-200 | Exact match | 65 contacts → |
“Excelerate360 offers business development and sales outsourcing services for B2B software and technology companies in the UK, Europe, and North America.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Support Adventuresupportadventure.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 62 contacts → |
“Support Adventure is an outsourcing company that specializes in customer service and support.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Salesarsalesar.ioHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 59 contacts → |
“Looking to fill your calendar with qualified calls?” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  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. | |||||
| 20 |  Sales Force Europesalesforceeurope.comHQ: Hitchin, United KingdomReported employees: 51-200 | Hitchin, United Kingdom | 51-200 | Exact match | 54 contacts → |
“European Sales Outsourcing, B2B Lead Generation, European Business Development.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  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. | |||||
| 22 |  4marketing4marketing.co.ukHQ: Portsmouth, United KingdomReported employees: 11-50 | Portsmouth, United Kingdom | 11-50 | Exact match | 47 contacts → |
“4Marketing is a direct marketing agency devoted to generating new business opportunities for its clients through its focused new generation of telemarketing professionals.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Advance Connectsadvance-connects.comHQ: Ellesmere Port, United KingdomReported employees: 51-200 | Ellesmere Port, United Kingdom | 51-200 | Exact match | 45 contacts → |
“Advance Connects are a B2B telemarketing, lead generation & appointment scheduling experts, operating within various sectors including construction, built environment, industrial…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Broadley Speakingbroadley-speaking.comHQ: Tavistock, United KingdomReported employees: 11-50 | Tavistock, United Kingdom | 11-50 | Exact match | 44 contacts → |
“With over three decades of experience, we partner with B2B sales and marketing teams to drive and nurture new customer acquisition - securing conversations with the right…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Beanstalk Marketingbeanstalkmarketing.co.ukHQ: Southend On Sea, United KingdomReported employees: 11-50 | Southend On Sea, United Kingdom | 11-50 | Exact match | 43 contacts → |
“Beanstalk is an integrated B2B Telemarketing and Lead Generation agency dedicated to helping our customers win new business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 806 company matches
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Inside sales outsourcers: 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
802 records in the displayed employee bands.
4 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 806 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 ↗
Inside sales outsourcers by metro
Questions about this company list
What does Exact match mean for inside sales outsourcers?
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 outsourcers did RevenueBase find based in the United Kingdom?
The saved snapshot records 806 matching company records, 8,349 tracked contacts and 1,607 verified emails. The public preview displays 25 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 outsourcers by geography
- Inside sales outsourcers based in Melbourne, Australia
- Inside sales outsourcers based in Sydney, Australia
- Inside sales outsourcers based in Sao Paulo, Brazil
- Inside sales outsourcers based in Toronto, Canada
- Inside sales outsourcers based in Helsinki, Finland
- Inside sales outsourcers based in Paris, France
- Inside sales outsourcers based in Berlin, Germany
- Inside sales outsourcers based in Bangalore, India
- Inside sales outsourcers based in Pune, India
- Inside sales outsourcers based in Singapore, Singapore
- Inside sales outsourcers based in Cape Town, South Africa
- Inside sales outsourcers based in Barcelona, Spain
Cite this list
RevenueBase Data Team. Top 25 inside sales outsourcers based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/inside-sales-outsourcers/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 outsourcers based in Melbourne, Australia
- Inside sales outsourcers based in Sydney, Australia
- Inside sales outsourcers based in Sao Paulo, Brazil
- Inside sales outsourcers based in Toronto, Canada
- Inside sales outsourcers based in Helsinki, Finland
- Inside sales outsourcers based in Paris, France
Company intelligence · public preview
Top 25 inside sales outsourcers based in the United Kingdom
RevenueBase records 806 matching company records for inside sales outsourcers based in the United Kingdom, with 8,349 tracked contacts and 1,607 verified work emails.
This public preview shows 25 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 25 inside sales outsourcers 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 | RESQresqcs.co.uk HQ: Kingston Upon Hull, United KingdomReported employees: 1,001-5,000 | Kingston Upon Hull, United Kingdom | 1,001-5,000 | Exact match | 490 contacts → |
“Give your customers a voice with ResQ.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Algomindsalgominds.ai HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 358 contacts → |
“At Algominds, we build AI agents that find you customers who already want to buy.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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. | |||||
| 4 | Engagetechengagetech.io HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 205 contacts → |
“EngageTech is the leading sales development partner for complex B2B technology companies operating in multi-stakeholder, enterprise sales environments.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Inside Globalinside-global.com HQ: Liverpool, United KingdomReported employees: 51-200 | Liverpool, United Kingdom | 51-200 | Exact match | 164 contacts → |
“Inside is a global agency dedicated to delivering growth and revenue opportunities for B2B tech companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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. | |||||
| 7 | PUNCHpunchb2b.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 122 contacts → |
“Most B2B pipeline problems aren't a volume problem.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | AIR Marketingair-marketing.co.uk HQ: Exeter, United KingdomReported employees: 51-200 | Exeter, United Kingdom | 51-200 | Exact match | 116 contacts → |
“Since 2016, Air Marketing has been the trusted outsourced sales and lead generation agency in the UK for ambitious B2B businesses.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Durhamlanedurhamlane.com HQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 115 contacts → |
“More than SDR Outsourcing.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | 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. | |||||
| 11 | 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. | |||||
| 12 | FLOWDflowd.co.uk HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 104 contacts → |
“Flowd is an award-winning sales prospecting specialist based in the UK, Europe & US.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Youpro Contactyouprocontact.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 90 contacts → |
“A world class offshore outsourcing agency, with offices in London and Harare, we have access to some of the best educated, best spoken graduates you will find anywhere in the…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Subferosubfero.com HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 83 contacts → |
“We are Subfero.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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. | |||||
| 16 | Excelerate360excelerate360.com HQ: Hitchin, United KingdomReported employees: 51-200 | Hitchin, United Kingdom | 51-200 | Exact match | 65 contacts → |
“Excelerate360 offers business development and sales outsourcing services for B2B software and technology companies in the UK, Europe, and North America.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Support Adventuresupportadventure.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 62 contacts → |
“Support Adventure is an outsourcing company that specializes in customer service and support.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Salesarsalesar.io HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 59 contacts → |
“Looking to fill your calendar with qualified calls?” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | 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. | |||||
| 20 | Sales Force Europesalesforceeurope.com HQ: Hitchin, United KingdomReported employees: 51-200 | Hitchin, United Kingdom | 51-200 | Exact match | 54 contacts → |
“European Sales Outsourcing, B2B Lead Generation, European Business Development.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | 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. | |||||
| 22 | 4marketing4marketing.co.uk HQ: Portsmouth, United KingdomReported employees: 11-50 | Portsmouth, United Kingdom | 11-50 | Exact match | 47 contacts → |
“4Marketing is a direct marketing agency devoted to generating new business opportunities for its clients through its focused new generation of telemarketing professionals.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Advance Connectsadvance-connects.com HQ: Ellesmere Port, United KingdomReported employees: 51-200 | Ellesmere Port, United Kingdom | 51-200 | Exact match | 45 contacts → |
“Advance Connects are a B2B telemarketing, lead generation & appointment scheduling experts, operating within various sectors including construction, built environment, industrial…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Broadley Speakingbroadley-speaking.com HQ: Tavistock, United KingdomReported employees: 11-50 | Tavistock, United Kingdom | 11-50 | Exact match | 44 contacts → |
“With over three decades of experience, we partner with B2B sales and marketing teams to drive and nurture new customer acquisition - securing conversations with the right…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Beanstalk Marketingbeanstalkmarketing.co.uk HQ: Southend On Sea, United KingdomReported employees: 11-50 | Southend On Sea, United Kingdom | 11-50 | Exact match | 43 contacts → |
“Beanstalk is an integrated B2B Telemarketing and Lead Generation agency dedicated to helping our customers win new business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 806 company matches
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Inside sales outsourcers: 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
802 records in the displayed employee bands.
4 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 806 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 ↗
Inside sales outsourcers by metro
Questions about this company list
What does Exact match mean for inside sales outsourcers?
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 outsourcers did RevenueBase find based in the United Kingdom?
The saved snapshot records 806 matching company records, 8,349 tracked contacts and 1,607 verified emails. The public preview displays 25 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 outsourcers by geography
- Inside sales outsourcers based in Melbourne, Australia
- Inside sales outsourcers based in Sydney, Australia
- Inside sales outsourcers based in Sao Paulo, Brazil
- Inside sales outsourcers based in Toronto, Canada
- Inside sales outsourcers based in Helsinki, Finland
- Inside sales outsourcers based in Paris, France
- Inside sales outsourcers based in Berlin, Germany
- Inside sales outsourcers based in Bangalore, India
- Inside sales outsourcers based in Pune, India
- Inside sales outsourcers based in Singapore, Singapore
- Inside sales outsourcers based in Cape Town, South Africa
- Inside sales outsourcers based in Barcelona, Spain
Cite this list
RevenueBase Data Team. Top 25 inside sales outsourcers based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/inside-sales-outsourcers/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
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- Inside sales outsourcers based in Melbourne, Australia
- Inside sales outsourcers based in Sydney, Australia
- Inside sales outsourcers based in Sao Paulo, Brazil
- Inside sales outsourcers based in Toronto, Canada
- Inside sales outsourcers based in Helsinki, Finland
- Inside sales outsourcers based in Paris, France