David Mitchell can't quite believe Ellie Taylor's ridiculous claims that she used to tell clients that the house they were interested in was lived in by Noel Edmonds when she used to be an estate agent.
Pure is a truthful exploration of one young woman's search for herself and her very real struggle with 'pure O' - an excruciating type of obsessive-compulsive disorder which takes the form of intrusive, and often sexual, thoughts.
The co-writers and stars of Catastrophe, the Channel 4 comedy about commitment, parenting and staying in love with each other anyway, talk about the show's fourth series.
