Just listened to this on i player. Very moving. The concept of the programme is that one week RP picks a guest, next week EM does - in the week they're not doing the picking they don't know who the interviewee is till they start recording. Wasn't sure about the concept but in this case it worked. Julian Barnes lost his wife 7 years ago and has written about grief. Robert Peston's wife died 3 years ago and he has also written about it. The main focus of the interview was the two widowers comparing notes, with just the odd interjection from Eddie Mair. It's unusual to hear two men talking about loss and grief as candidly and thoughtfully as this. Well worth catching up with.