Series B Fintech companies in London
Companies modernising banking, payments, lending, and financial infrastructure. Filtered to Series B-stage companies headquartered in London.
- StageSeries B
- IndustryFintech
- HQLondon
- Matches52
Built from a search like: “Top Series B Fintech companies in London”
Ranked by current headcount across Series B Fintech companies in London. Refreshed daily.
- 1Luno· London, England, United Kingdom
- Series B
- 728 employees
- Founded 2013
- 2Payhawk· London, England, United Kingdom
- Series B
- 458 employees
- Founded 2018
- 3LemFi· London, England, United Kingdom
- Series B
- 406 employees
- Founded 2020
- 4Talbot Underwriting· London, England, United Kingdom
- Series B
- 379 employees
- Founded 2001
- 5Wirex· London, England, United Kingdom
- Series B
- 270 employees
- Founded 2014
- 63S Money· London, England, United Kingdom
- Series B
- 250 employees
- Founded 2018
- 7GoHenry· London, England, United Kingdom
- Series B
- 228 employees
- Founded 2012
- 8ESG Book· Camden Town, England, United Kingdom
- Series B
- 205 employees
- Founded 2017
- 9Winton· London, England, United Kingdom
- Series B
- 190 employees
- Founded 1997
- 10Aspora· London, England, United Kingdom
- Series B
- 184 employees
- Founded 2022
- 11Wintermute· London, England, United Kingdom
- Series B
- 166 employees
- Founded 2017
- 12Runa· London, England, United Kingdom
- Series B
- 143 employees
- Founded 2016
- 13Volt.io· London, England, United Kingdom
- Series B
- 133 employees
- Founded 2019
- 14Monument· London, England, United Kingdom
- Series B
- 130 employees
- Founded 2017
- 15Ramp Network· London, England, United Kingdom
- Series B
- 125 employees
- Founded 2018
- 16Sharegain· London, England, United Kingdom
- Series B
- 118 employees
- Founded 2015
- 17Bumper· London, England, United Kingdom
- Series B
- 116 employees
- Founded 2013
- 18Synapse· London, England, United Kingdom
- Series B
- 113 employees
- Founded 2014
- 19Leanpay· London, England, United Kingdom
- Series B
- 111 employees
- Founded 2017
- 20Superscript· London, England, United Kingdom
- Series B
- 110 employees
- Founded 2015
- 21Navro· London, England, United Kingdom
- Series B
- 106 employees
- Founded 2022
- 22BMLL· London, England, United Kingdom
- Series B
- 105 employees
- Founded 2014
- 23Apron· London, England, United Kingdom
- Series B
- 104 employees
- Founded 2021
- 24BKN301· London, England, United Kingdom
- Series B
- 104 employees
- Founded 2021
- 25Smarkets· London, England, United Kingdom
- Series B
- 97 employees
- Founded 2008
Find engineers at Series B Fintech companies in London
Searching for “engineers at top Series B Fintech companies in London” surfaces this slice of the market. The list above ranks Fintech companies headquartered in London whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 52 matching companies in our index, this is a tight read on where the Fintech talent in London is heating up.
Three filters at once narrows the field hard. The companies that survive all three — Series B, Fintech, 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 Fintech’s next operators and angel investors.
Refolk converts this list into a live search. Ask for “senior engineers at Series B Fintech companies in London hiring” or “founders of Series B Fintech 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
Last refreshed: Thu, 07 May 2026 08:22:57 GMT
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