Who invested in Owlstone Medical

6 rounds we have observed, with the 7 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

BiotechHealthcareHealthtechMedical Devices

Funding summaryUpdated 26 Oct 2026

$153Mraised across 6 rounds since 2017, from 7 sources

$11MRound$15MRound$35MRound$58MRound$6.5MRound$27MSeries E

Latest round: Series E, $27MJan 2025
Led by: Ventura Capital
Biggest round: $58MRound · Aug 2021
Step-upi: 4.2×
Investors: 7 (1 led)

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

20172019202120232025

$11MRound$15MRound$35MRound$58MRound$6.5MRound$27MSeries E

First round: Round, $11M
Biggest round: $58M
Usual gap between rounds: 14 months

The rounds

Jan 2025
Series E$27M3 new1 returning
Reported by Firms' own news pages and 1 other
Apr 2024
Round$6.5M1 new
- Gates Foundation
Reported by Firms' own news pages
Aug 2021
Round$58M
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
Oct 2018
Round$35M2 new
- Foxco
- Horizons Ventures/ Ventura
Reported by Businessweekly
Mar 2018
Round$15M1 new
- Horizons Ventures/ Aviva
Reported by FinSMEs
Jan 2017
Round$11M
No investor was named in the report.
Reported by FinSMEs

Funding filed with regulators

Owlstone Medical filed 5 raises, $88M in all. Filings say how much was sold and to how many investors; they never name the investors.

May 2025$1.6MUK share allotment
Mar 2025$1.4MUK share allotment
Jan 2025$27MUK share allotment
Aug 2021$23MUK share allotment
Aug 2021$35MUK share allotment

Founders and team

From Owlstone Medical's own website: 2 founders, 22 on the team.

Billy BoyleCo-Founder and CEO

David Ruiz-AlonsoCo-Founder and COO

Mark CaponeCEO at Precision Medicine Advisors
Dr Max AllsworthChief Science Officer
Neil TweenChief Financial Officer
Dr Matthew HartVP of Chemical Protection
Dr. Russell ParrisVP of R&D Science
Elizabeth CroneHead of Business Development
Julia GreenwoodVP Programme – Research Products and Services
Kevin ChalmersVP Engineering & Operations
Lauren BrownHead of Operational Capability
Olga GandelmanHead of Hepatology
Pam LauderHead of Finance
Robert McCarthyVP Programme – Point of Care
Veronika Koenig-RoachHead of Legal
Andrea BowyerQuality Assurance Officer
Dr Doug WrightMedical Director Aviva
Emily ManningAssociate Project Manager
Joshua BatesSenior Systems Engineer
Luke CartwrightPrincipal Analytical Scientist

And 4 more on the team.

AdvisersDr Marc van der ScheeDr. Alan BoobisDr. Patrick M. Bossuyt

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Round2017Round2018Round2018Round2021Round2024Series E2025

Gates Foundation

Ventura CapitalL

Horizons Ventures

Aviva VenturesFoxcoHorizons Ventures/ AvivaHorizons Ventures/ Ventura

Everyone who backed them

Gates FoundationInstitutional LP2rounds

Ventura CapitalGrowth equity1round, led 1

Horizons VenturesVC firm1round

Aviva VenturesVC firm1round

Foxcono record of our own yet1round

Horizons Ventures/ Avivano record of our own yet1round

Horizons Ventures/ Venturano record of our own yet1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

These 2 firms list Owlstone Medical as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

LifeX VenturesVC firmPer its own site

Vault investmentsPrivate equityPer its own site

Quick answers about Owlstone Medical

Who invested in Owlstone Medical?

Owlstone Medical's investors include Gates Foundation, Ventura Capital, Horizons Ventures, Aviva Ventures and Foxco, and 2 more on record. Ventura Capital led its latest round.