David Walliams has reportedly signed a new deal to return to 'Britain's Got Talent' for another year.

David Walliams

David Walliams

ITV is said to have all four judges - including Simon Cowell, Amanda Holden and Alesha Dixon - lined up for the upcoming 15th series, with the bosses keen to keep the quartet together despite speculation former 'Good Morning Britain' star Piers Morgan could make a comeback.

An insider told The Sun newspaper's Bizarre TV column: "All four judges will be back this year, so it’s business as usual on BGT. If it’s not broken, don’t fix it.

"The format is still a great one, and that involves all four judges, including David.

“He does sometimes press Simon’s buttons in the wrong way but it’s hard to imagine him not being there.”

And although Piers appeared on the 'BGT' panel from 2007 to 2010 - as well as the sixth series of 'America's Got Talent' - it's said bosses couldn't work out a way for him to come in as a fifth judge.

Meanwhile, earlier this month it was confirmed Simon will be back on 'AGT' alongside Heidi Klum, Howie Mandel and Sofia Vergara.

The new season of the long-running talent show will see the same judging panel back for the 16th series.

Terry Crews will also return as the host.

A press release states: “To celebrate the return of America’s favourite judging panel, ‘AGT’ will be hosting one final nationwide ‘Last Chance Audition’ for the upcoming season on Saturday, March 6."

Hopefuls need to register over at AGTAuditions.com to book “a virtual audition slot” to be in with the chance of performing in front of the judges.

Last summer, Kelly Clarkson - who was judged by Simon when she appeared on, and won, the first series of 'American Idol' - stepped in to temporarily replace the 61-year-old music mogul, after he was rushed to hospital to undergo a six-hour surgery after falling off his electric bicycle at his home in Malibu, California.

As a result of his injuries, he wasn't able to appear on the panel for the first few episodes of the NBC show.

However, Simon recently revealed he is feeling “better” now than before he broke his back in August.