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Top Late-stage venture companies in London

Series E and beyond — pre-IPO scaleups with hundreds of employees and meaningful revenue. Filtered to companies headquartered in London.

Built from a search like: Top Late-stage venture companies in London

Ranked by current headcount across Late-stage venture companies headquartered in London. Refreshed daily.

  1. 1
    Octopus Energy· London, England, United Kingdom
    • Series unknown
    • 4.7k employees
  2. 2
    IHS Markit· London, England, United Kingdom
    • Series unknown
    • 4.7k employees
    • Founded 2020
  3. 3
    PeoplePerHour· London, England, United Kingdom
    • Series unknown
    • 3.9k employees
    • Founded 2007
  4. 4
    AlphaSights· London, England, United Kingdom
    • Series unknown
    • 3.6k employees
    • Founded 2008
  5. 5
    Framestore· London, England, United Kingdom
    • Series unknown
    • 3.2k employees
    • Founded 1986
  6. 6
    Toluna· London, England, United Kingdom
    • Series unknown
    • 3.2k employees
    • Founded 2000
  7. 7
    Tag· London, England, United Kingdom
    • Series unknown
    • 3.1k employees
    • Founded 1972
  8. 8
    Ciklum· London, England, United Kingdom
    • Series unknown
    • 3k employees
    • Founded 2002
  9. 9
    Two Circles· London, England, United Kingdom
    • Series unknown
    • 2.8k employees
    • Founded 2011
  10. 10
    Ebury· London, England, United Kingdom
    • Series unknown
    • 1.9k employees
    • Founded 2009
  11. 11
    Klöckner Pentaplast· London, England, United Kingdom
    • Series unknown
    • 1.8k employees
    • Founded 1965
  12. 12
    Inspired Thinking Group (ITG)· London, England, United Kingdom
    • Series unknown
    • 1.7k employees
    • Founded 2009
  13. 13
    Trading 212· London, England, United Kingdom
    • Series unknown
    • 1.4k employees
    • Founded 2004
  14. 14
    CloudPay· London, England, United Kingdom
    • Series unknown
    • 1.4k employees
    • Founded 1996
  15. 15
    Hyperoptic· London, England, United Kingdom
    • Series unknown
    • 1.4k employees
    • Founded 2010
  16. 16
    VTEX· London, England, United Kingdom
    • Series unknown
    • 1.4k employees
    • Founded 2000
  17. 17
    HKA· London, England, United Kingdom
    • Series unknown
    • 1.3k employees
    • Founded 2017
  18. 18
    Testronic· Croydon, England, United Kingdom
    • Series unknown
    • 1.3k employees
    • Founded 1998
  19. 19
    Multiverse· London, England, United Kingdom
    • Series unknown
    • 1.2k employees
    • Founded 2016
  20. 20
    Blockchain· London, England, United Kingdom
    • Series E
    • 1.2k employees
    • Founded 2011
  21. 21
    Trainline· London, England, United Kingdom
    • Series unknown
    • 1.2k employees
    • Founded 1997
  22. 22
    Smiths Interconnect· London, England, United Kingdom
    • Series unknown
    • 1.1k employees
    • Founded 2007
  23. 23
    AND Digital· London, England, United Kingdom
    • Series unknown
    • 1k employees
    • Founded 2014
  24. 24
    NET-A-PORTER· London, England, United Kingdom
    • Series unknown
    • 987 employees
    • Founded 2000
  25. 25
    MBO Partners· Ashburn, Virginia, United States
    • Series unknown
    • 982 employees
    • Founded 1996

Find engineers at Late-stage venture companies in London

Late-stage venture companies in London are some of the fastest-moving employers in the market. The list above ranks the largest Late-stage venture-stage companies headquartered in London by current headcount, drawn from public LinkedIn and Crunchbase records. With 1,019 matching companies in our index, the density of senior engineers, designers, and founders is unusually high.

At Late-stage venture, teams tend to be small, ambitious, and on the hunt for senior talent. The companies on this list are good signals for where the Londontalent market is heating up — and for which engineers and founders are about to become tomorrow’s operators.

Refolk converts this list into a live search. Ask for “founders of Late-stage venture companies in London” or “senior engineers at Late-stage venture companies in London hiring” and Refolk returns a ranked shortlist with evidence behind each match.

How this list is built

Refolk pulled Late-stage venture companies headquartered in London from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Thu, 07 May 2026 08:46:18 GMT

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