Hitchhikers Guide to the Galaxy BBC TV 1981

Six part series following the adventures of Arthur Dent and Ford Prefect (Simon Jones and David Dixon) upon the demolition of Earth to make way for a Hyperspace bypass, by the Vogan construction fleet.
The series was created by Douglas Adams and based upon his successful radio series, which in turn had become a series of best selling novels. This at the time was probably one of the most highly original and comic science fiction series made. (and one I am forever quoting at various times) Six half hour episodes were made, being broadcast in early 1981.