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IPO SaaS companies in London

Software-as-a-service vendors selling subscription cloud software to other businesses. Filtered to IPO-stage companies headquartered in London.

Built from a search like: Top IPO SaaS companies in London

Ranked by current headcount across IPO SaaS companies in London. Refreshed daily.

  1. 1
    Clarivate· London, England, United Kingdom
    • Post-IPO equity
    • 11.4k employees
  2. 2
    Deliveroo· London, England, United Kingdom
    • Post-IPO equity
    • 10.4k employees
    • Founded 2013
  3. 3
    YouGov· London, England, United Kingdom
    • Post-IPO debt
    • 4.7k employees
    • Founded 2000
  4. 4
    Playtech· London, England, United Kingdom
    • Post-IPO debt
    • 3.7k employees
    • Founded 1999
  5. 5
    Genius Sports· London, England, United Kingdom
    • Post-IPO equity
    • 3k employees
    • Founded 2001
  6. 6
    GlobalData Plc· London, England, United Kingdom
    • Post-IPO debt
    • 3k employees
    • Founded 2016
  7. 7
    ATG (Auction Technology Group)· London, England, United Kingdom
    • Post-IPO debt
    • 672 employees
    • Founded 1971
  8. 8
    Cazoo· London, England, United Kingdom
    • Post-IPO debt
    • 553 employees
    • Founded 2018
  9. 9
    Moonpig· London, England, United Kingdom
    • Post-IPO debt
    • 548 employees
    • Founded 2000
  10. 10
    ECARX· London, England, United Kingdom
    • Post-IPO equity
    • 427 employees
    • Founded 2017
  11. 11
    RedCloud· London, England, United Kingdom
    • Post-IPO equity
    • 415 employees
    • Founded 2012
  12. 12
    Thomson Reuters Europe· London, England, United Kingdom
    • Post-IPO debt
    • 409 employees
    • Founded 1990
  13. 13
    Greenlight· London, England, United Kingdom
    • Post-IPO equity
    • 379 employees
    • Founded 2011
  14. 14
    Rezolve Ai· London, England, United Kingdom
    • Post-IPO equity
    • 358 employees
    • Founded 2016
  15. 15
    XBP Europe· London, England, United Kingdom
    • Post-IPO debt
    • 344 employees
  16. 16
    Kape Technologies· London, England, United Kingdom
    • Post-IPO equity
    • 289 employees
    • Founded 2011
  17. 17
    Talenthouse AG· London, England, United Kingdom
    • Post-IPO equity
    • 135 employees
    • Founded 2000
  18. 18
    essensys· London, England, United Kingdom
    • Post-IPO equity
    • 98 employees
    • Founded 2006
  19. 19
    Quicklizard· London, England, United Kingdom
    • Post-IPO equity
    • 97 employees
    • Founded 2018
  20. 20
    The Business Community· London, England, United Kingdom
    • Post-IPO equity
    • 77 employees
  21. 21
    Diginex [NASDAQ: DGNX]· London, England, United Kingdom
    • Post-IPO equity
    • 42 employees
    • Founded 2017
  22. 22
    Gfinity PLC· London, England, United Kingdom
    • Post-IPO equity
    • 37 employees
    • Founded 2012
  23. 23
    Kyckr· London, England, United Kingdom
    • Post-IPO equity
    • 27 employees
    • Founded 2022
  24. 24
    Cykel· London, England, United Kingdom
    • Post-IPO equity
    • 11 employees
    • Founded 2023
  25. 25
    IDscan Biometrics Ltd· London, England, United Kingdom
    • Post-IPO debt
    • 8 employees
    • Founded 1989

Find engineers at IPO SaaS companies in London

Searching for “engineers at top IPO SaaS companies in London” surfaces this slice of the market. The list above ranks SaaS companies headquartered in London whose latest disclosed round is IPO, by current headcount, drawn from public LinkedIn and Crunchbase records. With 27 matching companies in our index, this is a tight read on where the SaaS talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three — IPO, SaaS, in London — are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become SaaS’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at IPO SaaS companies in London hiring” or “founders of IPO SaaS companies in London who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.

How this list is built

Refolk pulled SaaS companies headquartered in London whose latest disclosed funding round is IPO from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Thu, 07 May 2026 07:48:46 GMT

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