Ross Kemp joins hit BBC TV show, but which one? Soap star Ross Kemp has signed up for The Celebrity ­Traitors. 1 May 2026 Ross Kemp has reportedly signed up for The Celebrity ­Traitors. Ross Kemp has joined the BBC show The 61-year-old actor has joined The Celebrity ­Traitors, and Ross - who is best known for playing hardman Grant Mitchell in EastEnders - feels excited to "challenge himself". A source told The Sun newspaper: "He loves Traitors and thinks it's a programme on another level, which is why he really wanted to take part.