I know June Brown was the oldest but she only did the Xmas Special, what about the main show?

Was it Paul Daniels? He wa about 79 I think...

Oh yes, Paul Daniels! He was 72 when he competed.

Lulu McDonald McLaughlin Lawrie McTavish, a real cracker for 102.*
*one of these may not be true

How old was Tarbuck?

Nancy Dell'Olio was around the 180 mark according to her wikipedia once XD (Can't remember the actual citation but it was hilarious XD)

He wasn't that old - Born in 1940 according to wikipedia; he was 'only' 66 when he pulled out of series 4. He was overweight and possibly unfit which made him seem closer to Bruce in age, but he's a whopping 12 years younger.