imagine... follows celebrated British TV writer Russell T Davies as he prepares to return as the showrunner of Doctor Who – with two Doctors and bigger ambitions.

Boasting an amazing selection of the most watched, most influential and most highly acclaimed programmes ever made, The 50 Greatest Television Dramas presents a long overdue assessment of the rich heritage television drama has to offer. Channel 4 invited over 200 of Britain's top television drama professionals – writers, directors, producers and commissioners – to take part in an exclusive poll to discover what they consider the finest dramas ever produced.