She was the only genius I ever met': Wolf Hall director on making latest instalment without Hilary Mantel

'When she died, two years ago, I lost my collaborator and a good friend. Throughout making the first series, her attitude was always, Call me, night or day.'

'I think she was the only genius I have ever met, and I'm 68 now. When in her company, it was clear she was operating on another level.'

Read at www.theguardian.com