[4] Sullivan stayed at Granada for several more years, directing episodes of series such as Busman's Holiday, Stop That Laughing at the Back, Coronation Street and The Case Book of Sherlock Holmes, as well as adapting A Handful of Dust as a feature film for London Weekend Television (1988) and directing Thatcher: The Final Days (1991).
The film was inspired by the attention a male colleague at Granada received when his childcare arrangements broke down and he had to bring his child into work.
[1] Into the 2000s, Sullivan worked freelance on many television and film projects, including directing the final episode of Cold Feet for Granada, and the one-off comedy drama Catwalk Dogs for Shed Productions.
Sullivan wrote the film Letters to Juliet, starring Amanda Seyfried, which was released in the United States in 2010, taking over $80 million worldwide.
In 2020, Sullivan self-published two crime novels featuring the detective DS George Cross, 'The Dentist' and 'The Cyclist', within four months the two titles achieved over 200,000 downloads and he was signed by British publisher Head of Zeus.