Fri 11 Nov 2006As nature intendedReviewed - Scenes of a sexual nature: THE tabloid press has feasted on scenes of a sexual nature on Hampstead Heath in London, when they have involved indiscreet actors and singers. "It's Hampstead Heath!" declares one of the characters inScenes of a Sexual Nature. "They think it's weird if you're not having sex."The speaker (Andrew Lincoln) is sunbathing with his wife (Holly Aird) while secretly ogling a scantily dressed young Frenchwoman (Eglantine Rembauville). It's a warm, sunny August afternoon on the rolling expanses of the heath as director Ed Blum and screenwriter Aschlin Ditta observe, with varying levels of success, disparate couples at different stages in their relationships.