Renowned on the corporate circuit as an exceptionally funny and much sought-after speaker and host, Martin’s TV and film credentials are equally impressive. Famed for playing Robbie Coltrane’s body double – as the giant Rebeus Hagrid – in all eight Harry Potter films, Martin presented The World’s Strongest Man on Five, as well as hosting their NFL coverage, and is a permanent feature on ITV’s Aviva Rugby Premiership show. 2012 saw Martin join the team on BBC One’s Crimewatch, which he will continue to co-present into 2013.