With Jenni Murray. Sarah Brown joins Jenni to talk about her memoir 'Behind the Black Door', looking back at the three years she spent in Downing Street. During the Second World War, around three million children were evacuated to places of greater safety - but what happened when they came home? Jenni is joined by Julie Summers who's written a book of evacuees' stories, and by two former child evacuees. And eating small fish - which ones should we be choosing and how is it best to cook them? CJ Jackson from the Billingsgate Seafood School explains.