He started making regular contributions to radio series Weekending and The News Huddlines, wrote the sitcom Hair In The Gate which starred Alistair McGowan, and co-wrote Control Group 6, with Richard Bean, Andrew Clifford and Colin Swash.
Coleman also contributed to ITV series including The Bill (for whom he has also acted as storyline consultant), and Crossroads; and wrote the comedy drama High Table starring Dawn French for Tiger Aspect/BBC.
It tells the story of Kempton Bunton, a Newcastle cab driver prosecuted for the 1961 theft of Francisco Goya’s portrait of the Duke of Wellington from the National Gallery in London.
Directed by Roger Michell, it stars Jim Broadbent as Bunton, Dame Helen Mirren as his wife Dorothy and Fionn Whitehead as their son Jackie.
These included phone hacking, the Hillsborough Inquest verdicts, disclosure failings in the criminal justice system, the courts backlog, GDPR and the release of the London Bridge bomber Usman Khan.
In 2019 he won the Bar Council Legal Broadcasting Award for coverage of the UK Supreme Court case which decided that the Prime Minister Boris Johnson’s advice to the Queen to prorogue parliament was unlawful.