His other credits include The Selfish Giant, WPC 56, The Brothers Grimsby and Miss Peregrine's Home for Peculiar Children. Thomas and co-star Conner Chapman received a commendation at the 2013 London Film Festival for their roles in The Selfish Giant.
Shaun was axed from the role of Gerry, to the disappointment of himself. The show keep Shaun's exit as a secret until 17th May 2018 where the character was killed off, being murdered by Lachlan. Gerry's murder left many fans devastated.