As a joke, the programme notes listed Sylveste Mc Coy as played by "Sylveste Mc Coy" and, after a reviewer missed the joke and assumed that Sylveste Mc Coy was a real person, Kent-Smith adopted this as his stage name.
He was also reportedly a bodyguard for the Rolling Stones.
He appeared as the Fool in the , playing the title role.
He only performed with the company briefly, for the week of the show's run performing at the Sheffield Lyceum.
The Seventh Doctor developed into a much darker figure than any of his earlier incarnations, manipulating people like chess pieces and always seeming to be playing a deeper game.He used his natural slight Scottish accent and rolled his ), although this characteristic was phased out during the later, darker series of his tenure.In 1990, readers of Doctor Who Magazine voted Mc Coy's Doctor "Best Doctor", over perennial favourite Tom Baker.Some years later, on discovering that there were thirteen letters in 'Sylveste Mc Coy' and feeling that this might be unlucky, Mc Coy added an 'r' to the end of 'Sylveste'., often suffering from the inventions of Wilf Lunn.Mc Coy also portrayed, in one-man shows on the stage, two famous movie comedians: Stan Laurel and Buster Keaton.