London's appalling mayor has let the Tube become a sewer of sex attacks, graffiti and violent crime – leaving passengers to fend for themselves

The Tube no longer feels safe. Violent attacks on the platforms and carriages of the London Underground are soaring. So are theft, harassment and indecent exposure – and, most concerning of all, sexual assault. But instead of stepping up police patrols or increasing the presence of staff, Transport For London [TfL] is dumping the responsibility for safe travel on to the public, its passengers. Like countless others who ride the Tube every day, I have been physically assaulted while using the service – as I shall explain.