Updated 17 January 2002, 17.08

So many fans and photographers were waiting for her at the airport that she had to hide under a blanket as she ran to a big row of cars to escape.

Her group of helpers have taken up an entire floor of a hotel in London, but there are so many that she has to stay in a separate hotel, in a room costing £4,700 a night.

She went shopping and walking in London on Thursday, along with two huge minders, before heading for the BBC to film Top of the Pops.

Ultra tight security

Even though she is only spending three hours in the building, security is ultra tight, although CBBC Newsround Online was able to sneak past and snap a picture of the pop princess' dressing room door.

On Saturday, in between filming for ITV, Britney will be interviewed for Radio 1 and Capital Radio.

But she's not going to the stations - instead, they have to go to her at the hotel..