PM promises 'proper choice' on EU after Lawson comments

David Cameron has promised to give voters "a proper choice" between staying in a reformed EU and leaving, in a referendum to be held if the Conservatives win the next election.

The comments come after former Tory Chancellor Lord Lawson warned that any renegotiation with Brussels ahead of a vote would be "inconsequential".

He said the UK should quit the EU, with the referendum being moved forward.

But the prime minister said keeping the "status quo" was not an option.

Nick Robinson reports.