Series A Biotech companies in London
Companies applying biology, chemistry, and computation to therapeutics and tooling. Filtered to Series A-stage companies headquartered in London.
- StageSeries A
- IndustryBiotech
- HQLondon
- Matches28
Built from a search like: “Top Series A Biotech companies in London”
Ranked by current headcount across Series A Biotech companies in London. Refreshed daily.
- 1Isomorphic Labs· London, England, United Kingdom
- Series A
- 348 employees
- Founded 2021
- 2Sava· London, England, United Kingdom
- Series A
- 116 employees
- Founded 2016
- 3EyeBio· London, England, United Kingdom
- Series A
- 95 employees
- Founded 2021
- 4IMU Biosciences· London, England, United Kingdom
- Series A
- 76 employees
- Founded 2019
- 5Verdiva Bio· London, England, United Kingdom
- Series A
- 73 employees
- Founded 2024
- 6Alchemab Therapeutics Ltd· London, England, United Kingdom
- Series A
- 62 employees
- Founded 2019
- 7Purespring Therapeutics· London, England, United Kingdom
- Series A
- 59 employees
- Founded 2020
- 8Engitix Therapeutics· London, England, United Kingdom
- Series A
- 58 employees
- Founded 2016
- 9Amber Therapeutics· London, England, United Kingdom
- Series A
- 56 employees
- Founded 2021
- 10Portal Biotech· London, England, United Kingdom
- Series A
- 56 employees
- Founded 2021
- 11Mytos· London, England, United Kingdom
- Series A
- 48 employees
- Founded 2016
- 12Peptone· London, England, United Kingdom
- Series A
- 45 employees
- Founded 2018
- 13Shellworks· Greater London, England, United Kingdom
- Series A
- 43 employees
- Founded 2019
- 14Myricx Bio· London, England, United Kingdom
- Series A
- 32 employees
- Founded 2019
- 15Baseimmune· London, England, United Kingdom
- Series A
- 29 employees
- Founded 2019
- 16Multus· London, England, United Kingdom
- Series A
- 27 employees
- Founded 2020
- 17Eleusis· London, England, United Kingdom
- Series A
- 26 employees
- Founded 2013
- 18Hyris· London, England, United Kingdom
- Series A
- 24 employees
- Founded 2014
- 19Centauri Therapeutics Limited· London, England, United Kingdom
- Series A
- 23 employees
- Founded 2015
- 20Leucid Bio· London, England, United Kingdom
- Series A
- 23 employees
- Founded 2014
- 21Kesmalea Therapeutics· London, England, United Kingdom
- Series A
- 21 employees
- Founded 2020
- 22SyntheticGestalt· London, England, United Kingdom
- Series A
- 20 employees
- Founded 2018
- 23AstronauTx· London, England, United Kingdom
- Series A
- 19 employees
- Founded 2019
- 24Kadence Bio· London, England, United Kingdom
- Series A
- 18 employees
- Founded 2021
- 25Resurrect Bio· London, England, United Kingdom
- Series A
- 15 employees
- Founded 2022
Find engineers at Series A Biotech companies in London
Searching for “engineers at top Series A Biotech companies in London” surfaces this slice of the market. The list above ranks Biotech companies headquartered in London whose latest disclosed round is Series A, by current headcount, drawn from public LinkedIn and Crunchbase records. With 28 matching companies in our index, this is a tight read on where the Biotech talent in London is heating up.
Three filters at once narrows the field hard. The companies that survive all three — Series A, Biotech, 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 Biotech’s next operators and angel investors.
Refolk converts this list into a live search. Ask for “senior engineers at Series A Biotech companies in London hiring” or “founders of Series A Biotech 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 08:10:39 GMT
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