EPSRC Council member
Siân John MBE is a member of the Engineering and Physical Sciences Research Council (EPSRC) Council.
Siân is a Partner in the UK Cyber Practice at Ernst and Young LLP (EY).
Siân has worked in cybersecurity for 25 years across strategy, business risk, privacy, and technology.
She is a Fellow of the UK Chartered Institute of Information Security.
Siân was awarded an MBE in the Queen’s 2018 New Year’s Honours List for services to cybersecurity.
Last updated: 18 June 2026