The story of Harold Fry and his unlikely pilgrimage began as an afternoon play for radio. For many years, I have been writing plays and adapting novels for 'Woman's Hour' and the 'Classic' series. So this was originally a three-hander play, broadcast one sunny afternoon on BBC Radio 4.
I think of myself as a very ordinary person. I like writing about the juxtaposition between people: the beauty of them at times and then the banal, everyday context in which we find ourselves.
'Perfect' is about a set-up that looks perfect from the outside - beautiful country house, beautiful wife and mother, everything where it should be - and the deep fissures that, in fact, lie beneath that. 'Perfect' was partly a response to the shock of my first book, 'The Unlikely Pilgrimage Of Harold Fry,' being a success.
On television, it's all just shiny, successful people, and so I feel somebody has to wave a flag for the ordinary people who are not quite sure that they are getting it right.
We are quick to stick labels on others - especially those who don't fit in with the norm. 'Harold Fry' is about a broken marriage; 'Perfect' is about a broken person. They are both about finding kindness where you least expect it.