John Gaskell.

About John Gaskell

Professor John Gaskell is a fictional character from the BBC medical drama Holby City, played by actor Paul McGann. He first appeared in the nineteenth series episode "Group Animal − Part One", broadcast on 5 December 2017. John is a consultant neurosurgeon who joins the staff at Holby City Hospital as the director of surgical innovations. The character and McGann's casting was announced on 4 April 2017 and the actor began filming in August. Producers approached McGann about the role while he was appearing in a theatre production and when he liked the character, he signed a twelve-month contract.