 After leaving Cambridge Sullivan got a summer job as a chauffeur to Anthony Andrews on the production of "Brideshead Revisited".The producer Derek Granger learned that Sullivan was writing a screenplay with Derek Jarman (Bob Upadown), and encouraged him to get a job as a researcher with Granada Television.After working as a researcher on the first series of "Alfresco", Sullivan and Richard Maher partnered to write their first television series, a sitcom entitled "The Train Now Leaving", set in the dining carriage of an InterCity train running between London and Manchester.