Shaun provided the commentary track for the episode Father's Day from the first series of Doctor Who (2005) with Billie Piper and Phil Collinson. He also did a podcast (commentary track for the internet) for the episode The Age of Steel from the second series with Noel Clarke and Camille Coduri.
Researching his role in Tomorrow La Scala, Shaun shadowed a prison warden that later became the governor at Pentonville.
Shaun was a fan of the book The Long Firm by Jake Arnott when it first came out. He later played the role of Lenny in the television adaptation of the book.
While promoting the movie Tomorrow La Scala in a Film Festival in Cannes, Shaun had to stay in a caravan in Antibes because him and his friends couldn't find accomodations.
In March and April 2008, Shaun appeared in the revival of The Man Who Had All the Luck by Arthur Miller at The Donmar Warehouse in London. The show sold out completely very early.
Shaun's height is 5'10".
Shaun provided the narration for the story The Price of Paradise in the collection of books on tapes for Doctor Who. The CD also contains a discussion between the author Colin Brake and Shaun.
Shaun's episode of Spooks almost didn't air because of the BBC's and the actor's fear of reprisal by al-Qaeda.
Shaun: (Comparing television and stage work) Television and theatre are so different, aren't they? They are so far removed from each other that they are almost impossible to compare. I must say I love telly. When there is a good script, you have a great cast and time to do stuff, there is nothing like it, it's wonderful. But obviously theatre is a very extraordinary experience. Having time to rehearse, time to really pull something apart and put it back together again – I love that. It's that old cliché: the buzz; but it's just an extraordinary feeling. When it's going well, there is nothing like it, when it's not going well, then...!
Shaun: (Explaining how his friend Sean Holmes casted him in The Man Who Had All the Luck) He was telling me about this fantastic Arthur Miller play that no one had heard of and that the Donmar wanted him to do it. He was mulling things over and he said would you be interested in reading, and I said of course, and that was that, really.
Shaun: (answering if he had read the reviews for the play The Man Who Had All the Luck) I try to avoid them, which as you know is almost impossible.
Shaun: (On how facial hair is not for him after he had to have a mustache for a role) It's not something I'd choose to have. I had a shock every time I saw myself in the mirror.
Shaun: (Explaining his character Daniel Jameson in Messiah 2: Vengeance is mine; his character is a lawyer who gets wrongly convicted criminals out of jail) He's got a lot of money, drives a nice car, wears great suits and has a high profile; he's even written a best-selling book on law. Jameson enjoys all the trimmings that come his way. But he's good at his job and believes in what he's doing.
Shaun: (On the ethics he thinks the police should have) Once the police start to bend the rules, even if they do it for what they believe to be the right motive, it can turn into chaos. No-one can foresee the ramifications of what can result from that.
Shaun: (Expressing his opinion of the violence in the filmed medias) My whole thing about screen violence is that it should be made as unglamorous as possible because that's what the reality of it is – it makes you feel sick.
Shaun: (Talking about what he thought when he first read The Long Firm by Jake Arnott, he later played Lenny in the television adaptation of the book) I thought straight away what a great TV series it would make. And I remember thinking that Lenny was a really interesting character. He's quite complicated.