Bullfrog Films presents ; a Big World Cinema production for TVE and BBC Worldwide ; Television Trust for the Environment ; executive producer, Jenny Richards ; series producer, Luke Gawin ; series editor, Robert Lamb ; producers, Steven Markovitz, Toni Strasburg ; directed by Toni Strasburg
produced by Television Trust for the Environment ; a presentation of Bullfrog films ; executive producer, Brenda Kelly ; series consultant, Jenny Richards ; directed by Antra Cilinska, Christopher Sioco, Michie Saijo, Poojita Chowdhury, Radhika Kumar, Nikhil Despande