Britain's Got Talent 2012: Simon Cowell and David Walliams discuss their 'bromance'!

Simon Cowell (Britain's Got Talent 2012)Britain's Got Talent's Simon Cowell has compared his relationship with new judge David Walliams to the Prime Minister sketches from his show Little Britain!

The pair - who are on the show's panel with Alesha Dixon and Amanda Holden - have struck up a bromance while filming its new series, which David claims has left his wife, supermodel Lara Stone, feeling rather jealous.

The funnyman joked: "Every time I come back from work I'm like, 'oh guess what Simon did today, guess what Simon said' and she actually doesn't really like it!

"I've taken her out of our wedding photograph and replaced her with Simon. And sometimes when we get in to bed at night, I say, is it OK if I call you Simon? The first few times, she didn't mind, but then she's wearing the mask…"

Meanwhile, Simon said David reminds him of his parents' old dachshund dog.

"When he got a bit older he used to get on my leg occasionally and sort of hump it, and I'd be like, oh go on Lottie, just go away," explained the music mogul.

"You know the sketch he does on Little Britain, the prime minister and the gay assistant, that is our relationship.

"I keep saying to him, I'm not the prime minister… yet!"

Yesterday it was reported that they clashed during an interview on The Jonathan Ross Show when David made a 'string of gay jibes' about Simon.

Britain's Got Talent 2012 begins this Saturday at 8.00pm on ITV1.

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