An English comedian, actor, author, television presenter and activist, best known for his partnership with Matt Lucas on the BBC One sketch shows Little Britain, Rock Profile and Come Fly with Me.
Since 2012 Walliams has been a judge on the ITV talent show Britain's Got Talent. Since August 2013, he has written and starred in the BBC One sitcom Big School playing chemistry teacher Keith Church. By the end of 2014, Walliams had sold over 4 million books and is described as "the fastest growing children's author in the UK." He is often compared to Roald Dahl.