Mark's wife is named Sarah.
His public profile has increased through his role in advertisements for the Swindon-based Nationwide Building Society.
Mark has 3 children.
Mark is a RADA graduate
He is the nephew of actor Michael Gunn.
Mark: My uncle's an actor and I think initially when I was young I wanted to be like him. I used to come home from school and he used to be there with his tales. Then I just started doing lots of plays, because when I was little I was either in plays or in a band. Eventually I did so many plays it became what I wanted to do.
Mark: [His catchphrase on the series of Nationwide adverts] Brand new customers only!