The Fenn Street Gang 1971 "Please Sir!" film), David Barry, Peter Denyer and Liz Gebhardt. Leon Vitali replaced Malcolm McFee as Peter Craven during the first series, although Malcolm took this role back for the second and third series. Peter Denyer (Dennis Dunstable) and Liz Gebhardt (Maureen Bullock) were absent from the third (and final) series. John Alderton (Mr Hedges, their form-master when they starred in "Please Sir!") guest-appeared in 3 episodes of the first series of "The Fenn Street Gang" and the first two episodes from the final series of "Please Sir!", which ran alongside "The Fenn Street Gang" in transmission dates. Richard
David Alderton David Alderton David Alderton is an English writer specialising in pets and natural history topics. Growing up in a home surrounded by pets, he originally trained to become a veterinary surgeon. An allergic dermatitis acquired in his final year of study forced a change of career however, and so led him into the field of writing about pets and their care. He has since become a regular contributor of articles on this subject to a wide range of newspapers and magazines in the UK and abroad, and also participates frequently in radio and television programmes. As of 2010 his books