Senior politicians and media figures on Monday described Theresa May’s proposals to bar radical preachers from the airwaves and block extremist websites in response to the Woolwich terror attack as undesirable and unworkable.
John Whittingdale, a senior Tory and chairman of the media select 
committee, told the Financial Times that he had deep misgivings about 
the home secretary’s proposals.
“A broadcast ban doesn’t seem the right answer, it won’t prevent the 
material and it raises several questions about freedom of speech,” said 
Mr Whittingdale. “Access to hate preachers is just incredibly difficult 
to control, the days when you just ban the IRA from television are 
over.” 

 
 
http://www.ft.com/cms/s/0/bae5e470-c6e1-11e2-8a36-00144feab7de.html