[11] Further work followed with The Adventures of Bottle Top Bill and His Best Friend Corky, Empire Square (produced and directed by Dave Rowntree),[12] 64 Zoo Lane[13] and the title role in the English dub of Bunny Maloney.
[14] Wilkinson has voiced over 20 characters in the UK and US dubs of Thomas & Friends including Rocky, Spencer, Victor, Kevin, Diesel 10, Charlie, Stanley, Scruff, Cranky and Farmer McColl.
[20] In 2002 Wilkinson wrote and directed his first play Sun is Shining about an explosive love affair between a British Chinese trader and a Glaswegian artist.
A sell-out at the Kings Head Theatre, London and BAC Time Out Critics' Choice season (2003), it transferred to the Brits Off Broadway Festival] at 59E59 Theaters in New York in 2004.
[25] In 2024 Wilkinson directed the UK premiere of the Tony-nominated The Sound Inside by Adam Rapp at Traverse Theatre as part of the Edinburgh Fringe.