David Cameron 'not ruling out' Tube strike ban

The Prime Minister has told the BBC he would not rule out banning strikes on the Underground.

David Cameron says his party will look again at the possibility of making the industrial action illegal before the next election.

It comes as research by the Sunday Politics London programme revealed strong support for a ban among London's Tory MPs.

But the Tube workers' union, the RMT, has hit back saying any such move would be met with an all-out campaign of industrial and political opposition.

BBC London's political correspondent Karl Mercer spoke with Mick Cash from the RMT and got the opinion of Emily Thornberry, Labour MP for Islington South and Finsbury.