Lee Mack (in-universe)

Lee Mack was in attendance at a Christmas party with a host of other guests that included the Eleventh Doctor, Amy Pond, and a Cyberman. (NOTVALID: Consider Yourself One Of Us)

Mack was in the BBC studio when they were preparing for another Christmas, trying in vein to get the dog they had gotten instead of Pudsey the dog to do some tricks. (NOTVALID: It's Showtime)