Radiohead will perform the show's finale

The duet will take place during a charity evening at the Playhouse in Oxford, the band's home town.

Comedians Steve Coogan and Rory Bremner and actors Jeremy Irons and Sir Michael Gambon are among others taking part.

The evening has been organised by actor Tom Hollander, in aid of the children's hospice Helen House.

'Signed underwear'

Hollander, whose films have included Gosford Park and Enigma, became involved with the hospice two years ago after his niece, who was born with brain damage, was cared for there.

Radiohead's performance with Nighy will be the evening's finale.

Nighy, who won a Bafta for his performance as the washed-up rock star Billy Mack in Love Actually, scored a top 30 hit with his version of Love is All Around - retitled Christmas Is All Around in the film.

Other actors and performers taking part in the event, which takes place on Sunday evening, include Griff Rhys Jones, Hugh Laurie, Francesca Annis, and comedians Sue Perkins and Mel Giedroyc.

There will also be an auction of film memorabilia including signed underwear from Johnny Depp and a storyboard from Oscar-winning film American Beauty, signed by its director Sam Mendes.