David Senior

David Senior is a Deputy Chief Inspector with the United Kingdom's Office for Nuclear Regulation (ONR). David is an Executive Member of the ONR Board and currently Director of Regulatory Assurance.


Previously David was a Programme Director across two of ONR’s front line operational programmes the Defence Programme and the Decommissioning, Fuel & Waste Programme. In this capacity David had responsibility for the regulation of nuclear safety at 26 nuclear licensed and non- licensed sites across the UK and the strategic interface with Government Departments and the Nuclear Decommissioning Authority.


David has also operated as a Deputy Director responsible for Nuclear & Radioactive Waste Policy the UK Government's Department of Energy & Climate Change. He was responsible for civil nuclear and radioactive waste policy both within the UK and Internationally, providing strategic direction and working closely with Government Ministers. 


David is a Chartered Mechanical Engineer and has extensive regulatory experience across the wider nuclear industry acquired over 20 years. He was responsible for delivering a landmark regulatory policy that has secured a stage-wise reduction in stocks of heat generating highly active liquor stocks in the United Kingdom, and thus securing wider international confidence.