Clayton can be seen in Series 2 of The Crown on Netflix as Bob Boothby. He also filmed Delicious with Dawn French for Sky 1. Clayton has recently filmed The Forgiving Earth and The Split both to be shown in 2018. Clayton made his first stage appearance for 10 years in Brimstone and Treacle at the Hope Theatre for which he was nominated for an Off West End award for Best Actor. May 8th 2018 saw Clayton appearing in major roles in Holby City and The Split on BBC1. He will also be seen in the new Alan Partridge series with Steve Coogan later in 2018.
Clayton played Ian Chapman in award-winning Channel 4 sitcom Peep Show. In 2011, Clayton portrayed Sam Foster, father of Frank Foster in Coronation Street. Clayton also appears in the BBC Three sitcom Him & Her where he plays Graham. In 2013 and 2014, he played Superintendent Marlow in Hollyoaks, until his character was murdered on 21 April.
Clayton has made other notable television appearances in Doctor Who, My Family, Doctors and Wire in the Blood as well as films such as Ali G Indahouse. He also features in the British crime thriller, The Rise (originally called Wasteland]).
On stage, Clayton was a member of the Royal Shakespeare Company where he appeared alongside actors including Judi Dench and Zoe Wanamaker. In the West End, Clayton played the leading role of Tony in the improvised comedy whodunnit Scissor Happy at the Duchess Theatre alongside the Comedy Store Players.
Clayton currently plays Mr Colchester in Torchwood "Aliens Among us" for Big Finish productions
Directing credits include Privates on Parade at the Greenwich Theatre, starring Tony Slattery, The Comedy of Errors at Nottingham Playhouse starring Robert Bathurst, Paula Wilcox and Janet Dibley, The Pocket Dream at York Theatre Royal starring Lucy Benjamin and seven productions at the Watermill Theatre, Newbury.
Clayton is also an established actor, presenter, director and trainer in the corporate sector with over 1,400 corporate event credits. He has written two books, a guide to corporate acting called So You Want to Be A Corporate Actor, published by Nick Hern Books (2013). and The Working Actor also published by Nick Hern Books (2016).He is a regular columnist and feature writer for The Stage.