Dr Julian Lewis: The hon. Gentleman [Vincent Cable] has put his finger on the pulse of the problem. Is not the whole point of graffiti tags for one 'artist' to advertise his handiwork to others, and is it not the case that, with a hotline such as that operated by New Forest district council, which leads to the graffiti being obliterated within 48 hours, not only is the vandals' objective defeated but policing is made much easier if they keep returning to the site to reinstate their efforts?