Sir Paul McCartney is to appear in a new five-minute promotional film to promote former The Beatles bandmate Pete Best's Liverpool, England coffee shop. The drummer now owns the city's legendary Casbah Coffee Club, where the Fab Four once hung out before they became superstars. The venue, which was recently named a historic building by the English Heritage, was once housed in Best's childhood home. MCCartney admits he was thrilled to be asked to take part in the publicity campaign: "I think it's a good idea to let people know about the Casbah. They know about the Cavern, they know about some of those things, but the Casbah was the place where all that started." The Quarrymen, featuring John Lennon, George Harrison and MCCartney, performed at the opening night of the Casbah on 29 August, 1959. The commercial, which also features an appearance by John Lennon's first wife Cynthia Lennon, will premiere on Friday (11May07) in and around Liverpool.