13:00Jo GoodCraig Brown, Bob and Roberta Smith, Alison Harper and The Barking HourBBC Radio London Duration: 3 hours Thu 21st Sep 2017, 13:00 on BBC Radio LondonAuthor Craig Brown chats about ‘Ma’am Darling: 99 Glimpses of Princess Margaret’.GenresEntertainmentBrandJo Good Source: BBC Online