Denis is the CDIO across both Guy’s and St. Thomas’ and King’s College Hospital NHS Trusts. With a combined revenue of £4.5 billion and more than 50,000 staff, these Trusts represent the largest group of hospitals using a single digital platform in the UK. Prior to his role as CDIO, Denis served as CIO across the both Trusts and was the Technology Director for the implementation of a joint electronic health record system.