Back to everyone

Martin Fiennes

Principal, Deep Tech

Martin Fiennes

Martin joined Oxford Science Enterprises in 2015, bringing over 25 years’ experience investing in Deep Tech businesses.

At OSE, Martin works within the Deep Tech team sourcing new companies and supporting the growth of the existing portfolio.

Martin began his venture capital career as an Investment Manager, later becoming an Investment Director, at Top Technology Ventures in 1997. Early-stage UK technology companies he worked with while at Top Technology included IP Group, Focus Solutions Group and Arieso.

Prior to OSE, Martin ran Gatehouse Capital for nearly ten years, a technology corporate finance boutique supporting early-stage UK technology companies.

He served as an NED for King’s Arms Yard VCT since from 2011 until 2022, and is a Director of the HDH Wills 1965 Charitable Trust.

Martin holds a BA in Geography from the University of Oxford and an MBA from Ashridge Management College.

Martin sits on the board of

  • Fluorok
  • Living Optics
  • Mixergy
  • MoA Technology
  • Natcap Research
  • Salience Labs
  • Seloxium
  • Wild Bioscience

Meet everyone in the

Deep Tech Team

Alexis Zervoglos
Alexis ZervoglosSenior Partner, Tech
George Todd
George ToddAssociate, Deep Tech
Jim Graham
Jim GrahamAdvisor
Rawan Farwana
Rawan FarwanaAssociate, Deep Tech
Sam Harman
Sam HarmanSenior Associate, Deep Tech
William Goodlad
William GoodladPrincipal, Deep Tech