Here's all you need to know about him:
Phobias: None. In my own head, I think I can do all the challenges – which is probably wrong!
Missing any special occasion: No. My diary is clear
Biggest misconception you want to dispel in the jungle: None, as I won't let people see my real personality. I am joking…
Role in the camp: Master of all trades: Cooking, cleaning, washing-up. You name it, I will do it
Miss most: Comfy bed and my girlfriend
Dream camper: Peter Jones or Theo Paphitis
Relationship status: Dating Nigora Whitehorn
The dad of six said doing this show is way out of his comfort zone.
"I have been a big fan for many years. I always watch the show. Two years ago, I thought I would fancy the challenge and I knew I would be up for it. Then my children started saying 'Dad you should do it, would be really good'."
Duncan said he is "dreading" boredom in the jungle, but said he will cope well with the challenges, adding: "I climbed Kilimanjaro in my 60s. And I was one of the oldest people in our group who did. A lot of the younger people who started pulled out. There were 25 of us at the bottom but only 19 of us got to the top."
Duncan said his fellow Dragons' Den co-stars will be "shocked" he has signed up for the show, but he admitted he doesn't mind if he is the first celebrity to be voted out.
I'm A Celebrity... Get Me Out Of Here! returns on Sunday 15 November on ITV.
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