In the last programme in this series the Wild About Your Garden team face a truly daunting mission as they take on a small garden surrounded by housing in the shadow of one of London's busiest roads, the North Circular. What wildlife could they possible attract here? It's a tough challenge for wildlife buff Ellie Harrison who comes up with some truly bizarre suggestions to save some truly bizarre creatures. Take Britain's largest insect, the Stag Beetle: this giant lives underground as a larvae, eating rotting wood for seven years only to emerge and enjoy four weeks of life before dropping dead. The kids, Kiera aged six and Shay aged three, are easy to win over but can the team sell the idea to Mum and Dad too? Garden designer extraordinaire Chris Beardshaw goes all primeval and creates an incredible bog garden including trees which go in roots up. But when he makes the mistake of leaving his masterpiece for a few hours to judge at a flower show, Nick Knowles takes it upon himself to acquire a large shed and install in the garden.