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.
- StageLate-stage venture
- HQLondon
- Matches1,019
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.
- 1Octopus Energy· London, England, United Kingdom
- Series unknown
- 4.7k employees
- 2IHS Markit· London, England, United Kingdom
- Series unknown
- 4.7k employees
- Founded 2020
- 3PeoplePerHour· London, England, United Kingdom
- Series unknown
- 3.9k employees
- Founded 2007
- 4AlphaSights· London, England, United Kingdom
- Series unknown
- 3.6k employees
- Founded 2008
- 5Framestore· London, England, United Kingdom
- Series unknown
- 3.2k employees
- Founded 1986
- 6Toluna· London, England, United Kingdom
- Series unknown
- 3.2k employees
- Founded 2000
- 7Tag· London, England, United Kingdom
- Series unknown
- 3.1k employees
- Founded 1972
- 8Ciklum· London, England, United Kingdom
- Series unknown
- 3k employees
- Founded 2002
- 9Two Circles· London, England, United Kingdom
- Series unknown
- 2.8k employees
- Founded 2011
- 10Ebury· London, England, United Kingdom
- Series unknown
- 1.9k employees
- Founded 2009
- 11Klöckner Pentaplast· London, England, United Kingdom
- Series unknown
- 1.8k employees
- Founded 1965
- 12Inspired Thinking Group (ITG)· London, England, United Kingdom
- Series unknown
- 1.7k employees
- Founded 2009
- 13Trading 212· London, England, United Kingdom
- Series unknown
- 1.4k employees
- Founded 2004
- 14CloudPay· London, England, United Kingdom
- Series unknown
- 1.4k employees
- Founded 1996
- 15Hyperoptic· London, England, United Kingdom
- Series unknown
- 1.4k employees
- Founded 2010
- 16VTEX· London, England, United Kingdom
- Series unknown
- 1.4k employees
- Founded 2000
- 17HKA· London, England, United Kingdom
- Series unknown
- 1.3k employees
- Founded 2017
- 18Testronic· Croydon, England, United Kingdom
- Series unknown
- 1.3k employees
- Founded 1998
- 19Multiverse· London, England, United Kingdom
- Series unknown
- 1.2k employees
- Founded 2016
- 20Blockchain· London, England, United Kingdom
- Series E
- 1.2k employees
- Founded 2011
- 21Trainline· London, England, United Kingdom
- Series unknown
- 1.2k employees
- Founded 1997
- 22Smiths Interconnect· London, England, United Kingdom
- Series unknown
- 1.1k employees
- Founded 2007
- 23AND Digital· London, England, United Kingdom
- Series unknown
- 1k employees
- Founded 2014
- 24NET-A-PORTER· London, England, United Kingdom
- Series unknown
- 987 employees
- Founded 2000
- 25MBO 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
Last refreshed: Thu, 07 May 2026 08:46:18 GMT
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