Top Series C companies in London
Companies that have closed a Series C — growth-stage with significant revenue. Filtered to companies headquartered in London.
- StageSeries C
- HQLondon
- Matches100
Built from a search like: “Top Series C companies in London”
Ranked by current headcount across Series C companies headquartered in London. Refreshed daily.
- 1Moniepoint Group· London, England, United Kingdom
- Series C
- 5k employees
- Founded 2015
- 2SLR Consulting· London, England, United Kingdom
- Series C
- 4.1k employees
- Founded 1994
- 3TradingView· London, England, United Kingdom
- Series C
- 2.6k employees
- Founded 2011
- 4Leverage Edu· London, England, United Kingdom
- Series C
- 1.2k employees
- Founded 2017
- 5Teya· London, England, United Kingdom
- Series C
- 1k employees
- Founded 2019
- 6Lighthouse· London, England, United Kingdom
- Series C
- 1k employees
- Founded 2012
- 7Flo Health Inc.· London, England, United Kingdom
- Series C
- 690 employees
- Founded 2015
- 8Marshmallow· London, England, United Kingdom
- Series C
- 668 employees
- Founded 2017
- 9Cleo· London, England, United Kingdom
- Series C
- 597 employees
- Founded 2016
- 10Dext· London, England, United Kingdom
- Series C
- 500 employees
- Founded 2010
- 11Cognism· London Colney, England, United Kingdom
- Series C
- 483 employees
- Founded 2015
- 12Modulr· London, England, United Kingdom
- Series C
- 474 employees
- Founded 2015
- 13ComplyAdvantage· London, England, United Kingdom
- Series C
- 465 employees
- Founded 2014
- 14Vertice· London, England, United Kingdom
- Series C
- 459 employees
- Founded 2021
- 159fin· London, England, United Kingdom
- Series C
- 452 employees
- Founded 2016
- 16Nivoda· London, England, United Kingdom
- Series C
- 425 employees
- Founded 2017
- 17Soldo· London, England, United Kingdom
- Series C
- 391 employees
- Founded 2014
- 18VYZE INC· Aldie, Virginia, United States
- Series C
- 333 employees
- Founded 2019
- 19Vashi· London, England, United Kingdom
- Series C
- 332 employees
- Founded 2007
- 20Proactive· London, England, United Kingdom
- Series C
- 307 employees
- Founded 2006
- 21OneDome· London, England, United Kingdom
- Series C
- 303 employees
- Founded 2017
- 22THISTM· London, England, United Kingdom
- Series C
- 286 employees
- Founded 2019
- 23Swap· London, England, United Kingdom
- Series C
- 268 employees
- Founded 2022
- 24Student.com· London, England, United Kingdom
- Series C
- 256 employees
- Founded 2011
- 25Urbanic· London, England, United Kingdom
- Series C
- 239 employees
- Founded 2019
Find engineers at Series C companies in London
Series C companies in London are some of the fastest-moving employers in the market. The list above ranks the largest Series C-stage companies headquartered in London by current headcount, drawn from public LinkedIn and Crunchbase records. With 100 matching companies in our index, the density of senior engineers, designers, and founders is unusually high.
At Series C, 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 Series C companies in London” or “senior engineers at Series C 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 08:38:58 GMT
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