Filmmaker Tim Burton and partner Helena Bonham Carter have been given the green light to erect a $18,000 (GBP9,000) hut in the garden of their London home. The couple hope the "shepherd's hut" will provide son Billy, three, and their next child - due in December (07) with extra play space. The hut is set on cast-wheels and is an "unusual" design, according to a Camden council document.