Simon Cowell says he will not take part in next year's Britain's Got Talent auditions.

In an interview, Simon has revealed he will join the show at the semi-final stages and plans to eventually leave, although nothing has been decided yet.

The 50-year-old has made a number of changes to his working life, as he concentrates on bringing The X Factor to America.

As well as limiting his involvement in next year's BGT, the music and TV mogul previously announced that this series of American Idol will be his last.

Meanwhile, there is more speculation about which celebrities will step in as guest judges while Dannii Minogue is on maternity leave from The X Factor this summer.

Lady Gaga is the latest A-lister to be linked with the programme and is rumoured to be in talks to join Cheryl Cole, Louis Walsh and Simon on the judging panel. Kylie Minogue, Robbie Williams, Charlotte Church and Mel B are among the other names thought to be in the frame to fill in for Dannii while she is away.