Colin Baker says he's looking forward to taking part in I'm A Celebrity Get Me Out Of Here - as he wants to shed a stone and a half of weight!
The show's stars famously have to make do with rice and beans to eat - unless they can win more substantial meals in the daily Bushtucker Trials.
And actor Colin - best known as the sixth Doctor Who - wants to take advantage, revealing that he'd love to walk out thinner than when he entered.
"I am a rather large gentleman and I adore my food," he admitted. "I could give up booze with a drop of a hat but food, my gosh there is not even a fridge I can raid in the middle of the night!
"But I am seeing this as an opportunity to lose weight. I am aiming for at least a stone and a half and it would be fabulous if I can.
"I just then hope I can keep it off once I am out!"
At 69, Colin is the oldest contestant in this year's series - and he hopes he will be able to bring wisdom to the camp.
"I want to be kind to the people who are having a tough time, " he explains. "And I will be stern with people who are not pulling their weight.
"I am only worried about being one of the oldest contestants in the sense that I will worry about matching the energy of the younger ones."
I'm A Celebrity 2012 kicks off this Sunday at 9.00pm on ITV1.