Mr Cameron said that unless the current rules are changed: “English MPs will be unable to vote on the income tax paid by people in Aberdeen and Edinburgh, while Scottish MPs are able to vote on the tax you pay in Birmingham or Canterbury or Leeds.
“It is simply unfair. And with English votes for English laws we will put it right.
“Because if you have basic constitutional unfairness like we’ve had, if you have the people in one part of the UK feeling like they are getting a raw deal, then resentment festers, and that undermines the bonds and the fellow-feeling that are the basis of the United Kingdom.”