Company lists · Data refreshed September 2026
Top 21 Contact center optimization companies based in London, United Kingdom
RevenueBase identified 60 company matches for contact center optimization companies associated with London, United Kingdom as of September 2026 and tracks 1,034 professional contacts across them, including 270 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for contact center optimization companies associated with London, 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 27, 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 contact center optimization companies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 127 contacts → | ||||
Exact match “Natterbox is an AI-powered contact center solution that's natively integrated to Salesforce.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 2 | 98 contacts → | ||||
Exact match “Founded in 1988, RSVP is the oldest provider of contact centre services in the UK.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 3 | 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 27, 2026 · View company records in RevenueBase | |||||
| 4 | 85 contacts → | ||||
Exact match “Humanizing AI-Powered Customer Support The future of customer support is intelligent, efficient-and unmistakably human.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 5 | 63 contacts → | ||||
Exact match “Business Systems is a trusted transformation partner with over 35 years of experience helping CX teams and contact centres become smarter, faster and more compliant.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 6 | 59 contacts → | ||||
Exact match “CallCare is your outsourced contact centre and customer service partner.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 7 | 46 contacts → | ||||
Exact match “Direct Response can provide outsourcing of voice, data and contact centre services for organisation from a global business to a one-man operation, delivering outstanding service…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 8 | 35 contacts → | ||||
Exact match “Market Intelligence International (Marketii) is a trusted advisor to the world’s leading organizations in technology, medical devices, and consumer products.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 9 | 32 contacts → | ||||
Exact match “StableLogic is a technology consultancy specialising in customer contact, networking, software development and cloud expertise.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 10 | 29 contacts → | ||||
Exact match “QStory is a complete WFM platform that eliminates the trade-offs between operational efficiency, customer service, and employee experience.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 11 | 28 contacts → | ||||
Exact match “Our customer service outsourcing and software solutions create happier customers, happier customer service agents, and save you money.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 12 | 25 contacts → | ||||
Exact match “Noetica are a provider of Customer Interaction Management software for use in contact centres.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 13 | 16 contacts → | ||||
Exact match “Specialised cloud contact centre services for charities, retail, public bodies & construction.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 14 | 8 contacts → | ||||
Exact match “Meet Surfboard, the home of your customer support strategy.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “At alaouico, we understand the challenges businesses face with customer interactions-whether it's managing high call volumes, ensuring timely responses, or maintaining customer…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 16 | 6 contacts → | ||||
Exact match “Insight Now are the experts in delivering improved operational efficiency & customer experience across your customer service channels.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 17 | 5 contacts → | ||||
Exact match “Cloudworks.cc is the SaaS child of Sensée, the pioneers in work-from-home (aka home working) for medium to large contact centres.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 18 | 4 contacts → | ||||
Exact match “Unlock Your Business Potential with CRM Scene At CRM Scene, we are certified Zendesk experts dedicated to helping companies and organizations worldwide maximize their customer…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match “We are unashamedly obsessed with customer experience.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “Nsibandze Outsourcing (“NOS”) is a global CX business on a mission to ignite opportunity for small and medium sized companies through telemarketing, lead generation, data analysis…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “A full-service Customer Experience consulting firm with a long standing history in the design and optimisation of world class contact centre solutions.” Recorded in the RevenueBase company graph · Sep 27, 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 “contact center optimization companies”. 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 60 contact center optimization companies based in London, United Kingdom
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Contact center optimization companies based in London, United Kingdom at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 60 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 London, United Kingdom whose business descriptions match “contact center optimization companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 270 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 27, 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 “contact center optimization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many contact center optimization companies are there based in London, United Kingdom?
RevenueBase identified 60 company matches for contact center optimization companies associated with London, 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?
Natterbox tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United Kingdom has the most contact center optimization companies?
London leads the United Kingdom with 60 company records, followed by Manchester (10) and Glasgow (9).
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 270 professional contacts with verified work emails tracked across these 60 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 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 60 contact center optimization companies based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- Lists by location
- Lists A-Z
- New lists
- Contact center optimization companies based in Sao Paulo, Brazil
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Company intelligence · public preview
Top 21 contact center optimization companies based in London, 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 60 matching company records for contact center optimization companies based in London, United Kingdom, with 1,034 tracked contacts and 270 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 27, 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 contact center optimization companies based in London, 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 |  Natterboxnatterbox.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 127 contacts → |
“Natterbox is an AI-powered contact center solution that's natively integrated to Salesforce.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Rsvp Media Response LTDrsvp.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 98 contacts → |
“Founded in 1988, RSVP is the oldest provider of contact centre services in the UK.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Sirius Supportsirius-support.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 85 contacts → |
“Humanizing AI-Powered Customer Support The future of customer support is intelligent, efficient-and unmistakably human.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Business Systemsbslgroup.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 63 contacts → |
“Business Systems is a trusted transformation partner with over 35 years of experience helping CX teams and contact centres become smarter, faster and more compliant.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Callcarecallcare247.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 59 contacts → |
“CallCare is your outsourced contact centre and customer service partner.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Direct Responsedrltd.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 46 contacts → |
“Direct Response can provide outsourcing of voice, data and contact centre services for organisation from a global business to a one-man operation, delivering outstanding service…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Market Intelligence Internationalmarketii.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 35 contacts → |
“Market Intelligence International (Marketii) is a trusted advisor to the world’s leading organizations in technology, medical devices, and consumer products.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Stablelogicstablelogic.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 32 contacts → |
“StableLogic is a technology consultancy specialising in customer contact, networking, software development and cloud expertise.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Qstoryqstory.aiHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 29 contacts → |
“QStory is a complete WFM platform that eliminates the trade-offs between operational efficiency, customer service, and employee experience.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Resolvableresolvable.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Our customer service outsourcing and software solutions create happier customers, happier customer service agents, and save you money.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Noeticanoetica.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Noetica are a provider of Customer Interaction Management software for use in contact centres.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Call Handling Servicescallhandling.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 16 contacts → |
“Specialised cloud contact centre services for charities, retail, public bodies & construction.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Surfboard NOW Dialpad WFMteamsurfboard.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Meet Surfboard, the home of your customer support strategy.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Alaouicoalaouico.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“At alaouico, we understand the challenges businesses face with customer interactions-whether it's managing high call volumes, ensuring timely responses, or maintaining customer…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Insight NOWinsightnow.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Insight Now are the experts in delivering improved operational efficiency & customer experience across your customer service channels.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  cloudworks.cccloudworks.ccHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Cloudworks.cc is the SaaS child of Sensée, the pioneers in work-from-home (aka home working) for medium to large contact centres.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | CRM Scenecrmscene.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“Unlock Your Business Potential with CRM Scene At CRM Scene, we are certified Zendesk experts dedicated to helping companies and organizations worldwide maximize their customer…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Delivering Differencedeliveringdifference.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“We are unashamedly obsessed with customer experience.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Nsibandze Outsourcing NOSnsibandze.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 1 contacts → |
“Nsibandze Outsourcing (“NOS”) is a global CX business on a mission to ignite opportunity for small and medium sized companies through telemarketing, lead generation, data analysis…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  CX Experts Globalcx-experts.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“A full-service Customer Experience consulting firm with a long standing history in the design and optimisation of world class contact centre solutions.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 60 company matches
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Contact center optimization companies: dataset insights
September 27, 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
60 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 across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 60 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 27, 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 contact center optimization companies?
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 contact center optimization companies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 60 matching company records, 1,034 tracked contacts and 270 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 27, 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
Contact center optimization companies by geography
- Contact center optimization companies based in Sao Paulo, Brazil
- Contact center optimization companies based in Toronto, Canada
- Contact center optimization companies based in Paris, France
- Contact center optimization companies based in Madrid, Spain
- Contact center optimization companies based in Atlanta, United States
- Contact center optimization companies based in Miami, United States
- Contact center optimization companies based in Argentina
- Contact center optimization companies based in Australia
- Contact center optimization companies based in Belgium
- Contact center optimization companies based in Brazil
- Contact center optimization companies based in Canada
- Contact center optimization companies based in Chile
Cite this list
RevenueBase Data Team. Top 21 contact center optimization companies based in London, United Kingdom. Snapshot: September 27, 2026. https://revenuebase.ai/companies/contact-center-optimization-companies/united-kingdom/london.
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
- Contact center optimization companies based in Sao Paulo, Brazil
- Contact center optimization companies based in Toronto, Canada
- Contact center optimization companies based in Paris, France
- Contact center optimization companies based in Madrid, Spain
- Contact center optimization companies based in Atlanta, United States
- Contact center optimization companies based in Miami, United States
Company intelligence · public preview
Top 21 contact center optimization companies based in London, United Kingdom
RevenueBase records 60 matching company records for contact center optimization companies based in London, United Kingdom, with 1,034 tracked contacts and 270 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 27, 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 contact center optimization companies based in London, 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 | Natterboxnatterbox.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 127 contacts → |
“Natterbox is an AI-powered contact center solution that's natively integrated to Salesforce.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Rsvp Media Response LTDrsvp.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 98 contacts → |
“Founded in 1988, RSVP is the oldest provider of contact centre services in the UK.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sirius Supportsirius-support.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 85 contacts → |
“Humanizing AI-Powered Customer Support The future of customer support is intelligent, efficient-and unmistakably human.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Business Systemsbslgroup.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 63 contacts → |
“Business Systems is a trusted transformation partner with over 35 years of experience helping CX teams and contact centres become smarter, faster and more compliant.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Callcarecallcare247.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 59 contacts → |
“CallCare is your outsourced contact centre and customer service partner.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Direct Responsedrltd.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 46 contacts → |
“Direct Response can provide outsourcing of voice, data and contact centre services for organisation from a global business to a one-man operation, delivering outstanding service…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Market Intelligence Internationalmarketii.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 35 contacts → |
“Market Intelligence International (Marketii) is a trusted advisor to the world’s leading organizations in technology, medical devices, and consumer products.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Stablelogicstablelogic.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 32 contacts → |
“StableLogic is a technology consultancy specialising in customer contact, networking, software development and cloud expertise.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Qstoryqstory.ai HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 29 contacts → |
“QStory is a complete WFM platform that eliminates the trade-offs between operational efficiency, customer service, and employee experience.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Resolvableresolvable.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Our customer service outsourcing and software solutions create happier customers, happier customer service agents, and save you money.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Noeticanoetica.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Noetica are a provider of Customer Interaction Management software for use in contact centres.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Call Handling Servicescallhandling.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 16 contacts → |
“Specialised cloud contact centre services for charities, retail, public bodies & construction.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Surfboard NOW Dialpad WFMteamsurfboard.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Meet Surfboard, the home of your customer support strategy.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Alaouicoalaouico.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“At alaouico, we understand the challenges businesses face with customer interactions-whether it's managing high call volumes, ensuring timely responses, or maintaining customer…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Insight NOWinsightnow.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Insight Now are the experts in delivering improved operational efficiency & customer experience across your customer service channels.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | cloudworks.cccloudworks.cc HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Cloudworks.cc is the SaaS child of Sensée, the pioneers in work-from-home (aka home working) for medium to large contact centres.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | CRM Scenecrmscene.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“Unlock Your Business Potential with CRM Scene At CRM Scene, we are certified Zendesk experts dedicated to helping companies and organizations worldwide maximize their customer…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Delivering Differencedeliveringdifference.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“We are unashamedly obsessed with customer experience.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Nsibandze Outsourcing NOSnsibandze.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 1 contacts → |
“Nsibandze Outsourcing (“NOS”) is a global CX business on a mission to ignite opportunity for small and medium sized companies through telemarketing, lead generation, data analysis…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | CX Experts Globalcx-experts.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“A full-service Customer Experience consulting firm with a long standing history in the design and optimisation of world class contact centre solutions.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Contact center optimization companies: dataset insights
September 27, 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
60 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 across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 60 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 27, 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 contact center optimization companies?
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 contact center optimization companies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 60 matching company records, 1,034 tracked contacts and 270 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 27, 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.
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Cite this list
RevenueBase Data Team. Top 21 contact center optimization companies based in London, United Kingdom. Snapshot: September 27, 2026. https://revenuebase.ai/companies/contact-center-optimization-companies/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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