When does The Hitchhiker's Guide to the Galaxy return?

The Hitchhiker's Guide to the Galaxy is a BBC television adaptation. The series stars Simon Jones as Arthur Dent, David Dixon as Ford Prefect, Mark Wing-Davey as Zaphod Beeblebrox, Sandra Dickinson as Trillian and Stephen Moore as the voice of Marvin. The adaptation follows the original radio series in 1978 and 1980, the first novel and double LP, in 1979, and the stage shows in 1979 and 1980. It won a Royal Television Society Award as Most Original Programme of 1981.