Company lists · Data refreshed September 2026
Top 25 Retention marketing staffing companies based in London, United Kingdom
RevenueBase identified 471 retention marketing staffing companies headquartered in London, United Kingdom as of September 2026 and tracks 7,159 professional contacts across them, including 1,189 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers retention marketing staffing companies headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 retention marketing staffing companies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,248 contacts → | ||||
Indirect evidence “We’re Harvey Nash, and we build amazing technology and digital teams.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 333 contacts → | ||||
Indirect evidence “Search jobs or partner with us by visiting We are Aspire.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 203 contacts → | ||||
Indirect evidence “Our Heritage Founded by Lady Virginia Tate in 1985, Tate Recruitment emerged with a firm vision: to be the best everywhere, all the time.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 119 contacts → | ||||
Indirect evidence “At Annapurna, we are focused on becoming a trusted responsible search partner for our clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 118 contacts → | ||||
Indirect evidence “We’re LMA, part of Empresaria Group plc, a professional recruitment agency that’s powered by curiosity.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 102 contacts → | ||||
Strong evidence “Underground Ecom is a rapidly growing Email marketing agency specialising in helping ecommerce businesses reach their full potential through retention marketing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 99 contacts → | ||||
Indirect evidence “At Team Spirits, we bring together great people who share a genuine passion for delivering outstanding service.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 78 contacts → | ||||
Indirect evidence “UK's Premier Hospitality Recruitment Agency | B Corp Certified | London & Manchester Change specialises in providing amazing talent for the hospitality industry at all levels and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 73 contacts → | ||||
Indirect evidence “RCR is a young and vibrant recruitment agency that offers recruitment services for the events and communications sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 72 contacts → | ||||
Indirect evidence “3Search is a commercial recruitment agency, connecting talent to help you and your company thrive.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 59 contacts → | ||||
Indirect evidence “Barclay Simpson is a specialist recruitment consultancy supporting blue-chip organisations across international markets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 59 contacts → | ||||
Indirect evidence “We help businesses access the best talent in order to achieve their goals.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 57 contacts → | ||||
Indirect evidence “Since 2005, Oakleaf Partnership has been successfully placing people into jobs across every HR discipline, in every sector imaginable.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 53 contacts → | ||||
Indirect evidence “Career Moves Group is a certified B Corp™ and women-owned boutique recruitment agency with over 15 years of experience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 48 contacts → | ||||
Indirect evidence “Established in 2003 CVUK Group have become a trusted talent acquisition partner for a broad portfolio of global businesses across the direct to consumer, beauty, home, lifestyle…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 48 contacts → | ||||
Indirect evidence “RedHat are financial recruiters for the Media Sector.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 46 contacts → | ||||
Indirect evidence “ADOLPHUS GROUP is a Leading Recruitment Agency in London that offers a full step-by-step recruitment process, providing high quality tailored solutions to suit each individual…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 42 contacts → | ||||
Indirect evidence “Creating value through talent” Smart business leaders know that people are vital to any organisation’s success.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 41 contacts → | ||||
Partial evidence “We’re a global search and recruitment consultancy dedicated to marketing and sales.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 39 contacts → | ||||
Indirect evidence “Creative Recruitment the UK’s most respected talent finder since 1995.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 39 contacts → | ||||
Partial evidence “As the UK's leading supplier of staffing solutions, we have been delivering highly trained staff since 1993 and with our extensive database of over trained and experienced brand…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 36 contacts → | ||||
Indirect evidence “At The Black Swan Group we specialise in discovering outstanding staff and providing them with unique opportunities; enabling them to exceed expectations, reach the top of their…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 33 contacts → | ||||
Indirect evidence “We are Parallel!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 33 contacts → | ||||
Indirect evidence “Kennedy Pearce is a leading recruitment group focusing on: Contingent Recruitment Executive Search RPO Solutions Our Contingent service covers: Accounting & Finance Banking…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 33 contacts → | ||||
Partial evidence “Technology marketing recruitment.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: retention marketing staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names retention marketing staffing companies.
- Partial evidence
- Its own public description names part of retention marketing staffing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name retention marketing staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 471 retention marketing staffing companies based in London, United Kingdom
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Retention marketing staffing companies based in London, United Kingdom at a glance
As of Sep 29, 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 471 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among retention marketing staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in London, United Kingdom whose own description of what they do matches “retention marketing staffing companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names retention marketing staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among retention marketing staffing companies, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 1,189 across the full list. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Retention marketing staffing companies by metro in the United Kingdom
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names retention marketing staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many retention marketing staffing companies are there based in London, United Kingdom?
RevenueBase identified 471 retention marketing staffing companies headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Harvey Nash, headquartered in London, tops this list with the largest team on record.
Which city in the United Kingdom has the most retention marketing staffing companies?
London leads the United Kingdom with 471 headquartered companies, followed by Manchester (53) and Birmingham (31).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,189 verified decision-maker contacts tracked across these 471 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, 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.
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