12:00Robert ElmsMark Dempster, Nigel Barden and Gisli Orn GardarssonBBC Radio London Duration: 3 hours Fri 18th Jan 2013, 12:00 on BBC Radio LondonMark Dempster on his new book, Nigel Barden on food, this week’s ‘Fourfer’ is The Pioneers and actor Gisli Orn Gardarsson.GenresFactualBrandRobert Elms Source: BBC Online