When it comes to making a biopic, learning from the subjects themselves is a vital component in creating a triumphant endeavour – and so for the The Theory of Everything, which recounts the love story between Stephen Hawking and his wife, Jane, director James Marsh met the pair themselves – and tells us all about his encounters when we sat down with him ahead of the film’s release, as well his admiration for leading duo Eddie Redmayne and Felicity Jones, who brought the roles to life on the big screen.

The Theory of Everything is released on January 1st. Watch our interview with Felicity Jones here.