Claudia Winkleman is "genuinely scared" about her new BBC Radio 2 show.

Claudia Winkleman

Claudia Winkleman

The 'Strictly Come Dancing' presenter thought it was a "joke" when she was asked to take over from Graham Norton in his Saturday morning slot and she is apprehensive about following in the footsteps of an "absolute legend".

She told The Sunday Telegraph's Stella magazine: "When the big boss of Radio 2 offered me the job, I honestly thought it was a joke and put the phone down. I'm genuinely scared about it.

"Just the thought of going live on a Saturday morning makes me want to wear a nappy. Because I'm following an absolute legend!

"So I imagine people are going to be fed up, but I will try my best. And if it doesn't work, I'll know – and I will leave."

Despite her reservations, Claudia loves live broadcasting because of the risk of things going wrong.

She said: "I love live television because I like being tested. I like the idea that it could go horribly wrong.

"Which is weird because I won't get on a roller coaster or try rice pudding - is it savoury or sweet? - so I wouldn't say I'm brave.

"[Live broadcasting is] as immediate as life gets. Fingers crossed things go well, but I might say the wrong things or do a roly-poly…"

The 49-year-old star claimed she never gets recognised in public, so joked she thinks her career is just an elaborate prank organised by her parents.

She said: "Here's the truth. I have never, ever been recognised.

"Somebody once came up to me in Waterstones and said, 'Oh my God – will you please sign something for me? I'm such a fan, Davina!' And that's it.

But I have a theory that all this is in fact a stunt organised by my parents. I don't think that 'Strictly' actually goes out on telly, and I know that you've been roped in to do this fake interview by them.

"So you'll mock something up and they'll send it to me with a note saying: 'We're so proud!' Because I refuse to believe that any of it is real."