Top IPO companies in London
Public companies and recent post-IPO follow-on raises. Filtered to companies headquartered in London.
Ranked by current headcount across IPO companies headquartered in London. Refreshed daily.
- 1HSBC· London, England, United Kingdom
- Post-IPO debt
- 195.4k employees
- 2Vodafone· London, England, United Kingdom
- Post-IPO equity
- 148.1k employees
- Founded 1982
- 3G4S· London, England, United Kingdom
- Post-IPO equity
- 115.2k employees
- Founded 1901
- 4Aon· London, England, United Kingdom
- Post-IPO debt
- 92.6k employees
- Founded 1979
- 5DXC Technology· Ashburn, Virginia, United States
- Post-IPO debt
- 90.1k employees
- Founded 2017
- 6bp· London, England, United Kingdom
- Post-IPO equity
- 80.9k employees
- Founded 1909
- 7Standard Chartered· London, England, United Kingdom
- Post-IPO debt
- 78.6k employees
- 8BT Group· London, England, United Kingdom
- Post-IPO equity
- 73k employees
- Founded 1969
- 9BAT· London, England, United Kingdom
- Post-IPO debt
- 46.9k employees
- Founded 1902
- 10Marks and Spencer· London, England, United Kingdom
- Post-IPO debt
- 41.8k employees
- 11Rio Tinto· London, England, United Kingdom
- Post-IPO debt
- 40.7k employees
- 12Diageo· London, England, United Kingdom
- Post-IPO debt
- 33.7k employees
- 13Anglo American· London, England, United Kingdom
- Post-IPO debt
- 26.6k employees
- Founded 1917
- 14Aviva· London, England, United Kingdom
- Post-IPO equity
- 26.3k employees
- 15LSEG· London, England, United Kingdom
- post ipo secondary
- 24.6k employees
- Founded 2007
- 16Vedanta Group· London Colney, England, United Kingdom
- Post-IPO debt
- 18.8k employees
- Founded 1954
- 17Entain· London, England, United Kingdom
- Post-IPO debt
- 18.7k employees
- Founded 2001
- 18Haleon· London, England, United Kingdom
- post ipo secondary
- 18.1k employees
- Founded 2022
- 19Frasers Group· London, England, United Kingdom
- Post-IPO debt
- 16.5k employees
- Founded 1982
- 20Petrofac· London, England, United Kingdom
- Post-IPO equity
- 15.4k employees
- Founded 1981
- 21Mohawk Industries· Calhoun, Georgia, United States
- Post-IPO debt
- 12.8k employees
- 22Clarivate· London, England, United Kingdom
- Post-IPO equity
- 11.4k employees
- 23Deliveroo· London, England, United Kingdom
- Post-IPO equity
- 10.4k employees
- Founded 2013
- 24Hikma Pharmaceuticals· London, England, United Kingdom
- Post-IPO debt
- 10.4k employees
- Founded 1978
- 25Wise· London, England, United Kingdom
- Post-IPO debt
- 10.1k employees
- Founded 2011
Find engineers at IPO companies in London
IPO companies in London are some of the fastest-moving employers in the market. The list above ranks the largest IPO-stage companies headquartered in London by current headcount, drawn from public LinkedIn and Crunchbase records. With 277 matching companies in our index, the density of senior engineers, designers, and founders is unusually high.
At IPO, 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 IPO companies in London” or “senior engineers at IPO companies in London hiring” and Refolk returns a ranked shortlist with evidence behind each match.
How this list is built
Last refreshed: Thu, 07 May 2026 08:38:09 GMT
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