GREAT THOUSAND-STRONG ARMIES OF executives were employed at LWT and Thames in the 70s to fashion spin-offs out of every possible sitcom around. This one clearly hailed from the end of a long day when they sitting about on their arses were waiting to clock off. Gurning, Roland Rat-voiced ON THE BUSES Blakey (STEPHEN LEWIS) goes off the buses to start new life in Costa Del Sol devoting time to professionally insulting the natives. DEREK GRIFFITHS was one of them. PAT COOMBS was his missus.