John Atterbury
From Tardis Wiki, the free Doctor Who reference
John Atterbury (born 4 August 1941[1]-2022) appeared in two Doctor Who television stories: as a White Robot in The Mind Robber and an alien guard in The War Games.
He shared his memories of the two stories on the 192nd edition of Big Finish's charity podcast series Toby Hadoke's Who's Round.