Simon Dunn Simon Dunn is the Head of The Circuit Operations at the British Heart Foundation (BHF). His career has included the armed forces, aerospace manufacturing and leadership positions in third sector health. His role at the BHF is operational delivery of the UK’s national defibrillator registry, The Circuit. This involves working closely with the 14 NHS ambulance services and the national partnership that funds and delivers a system that now has over 115,000 defibrillators registered by over 75,000 individual Guardians and organisations. Simon was awarded an MBE for his humanitarian work and crews emergency ambulances as a St John Ambulance volunteer. Find out more about the British Heart Foundation View more information about other speakers at the RLSS UK Conference 2026 Manage Cookie Preferences