Louis Davison played himself in The Five(ish) Doctors Reboot. He later played Franko and a Policeman in the Susan's War audio story The Shoreditch Intervention.
He is the son of Peter Davison and Elizabeth Morton, the half brother of Georgia Moffett, brother of Joel James Davison, brother-in-law of David Tennant, uncle of Ty Tennant and cousin of George Watkins.