Watch HDToday. ITV Naturalist Nigel Marven stars in this drama-documentary in which he explores his own back garden, in all its intricate detail. Shrunk to the size of an ant, he and his two companions - technical assistant Laura Green (Sarah Matravers) and driver Doug Kruger (Robin Lawrence) - embark on a mission to cross Nigel's back garden in just 24 hours. Along the way they meet some of the many thousands of creatures that fight for survival every day in these urban jungles .