Close to 400 suspected pirate radio stations in London have been shut down over the last two years, according to figures released by Ofcom. 

In response to a Freedom of Information request, the communications regulator revealed nearly a quarter of the raids took place in Haringey, north London.

It says that despite the advent of internet radio and the introduction of community broadcasting licences, pirate stations remain a problem because they can interfere with vital comms channels used by the emergency ...