Some of the new characters in the US version of Little Britain have been revealed.

A copy of the script now being made for the HBO network has been leaked to the press, and it includes such new grotesques as spoiled wannabe child star Ellie Grace, who is apparently based on a young Britney Spears, and her mother.

In another scene, David Walliams plays Madonna’s personal assistant, fulfilling her outrageous demands. ‘Sometimes during the afternoon Madonna may wish to adopt a black baby,’ he says in one sketch. ‘So if you can arrange for a box of black babies to be flown in daily at 3pm…’

Other new characters include an obsessive-compulsive recluse based on Howard Hughes, a stern dog trainer based on Barbara Woodhouse, and a wholesome all-American couple with a secret life.

Returning characters include Vicky Pollard, Lou and Andy, gay Prime Ministerial aide Sebastian, Fat Fighter Marjorie Dawes, and Daffyd, who is ‘the only gay on the campus’ as he is studying at an American university.

Photographers have also caught the couple filming a scene in North Carolina in which Walliams’s ‘rubbish transvestite’ Emily Howard is arrested by an overweight cop, played by Matt Lucas.

Although tailored for the US market, the six new episodes are likely to be screened on the BBC, too.