Cameron said he understood "we are in this together" to refer to the Sun's support for the Conservative party.

CNN: STORY HIGHLIGHTS

David Cameron told the BBC he understood people's "frustrations" about the road, which links the East coast to the M1 and M6.

BBC: David Cameron pledges speed up for A14 upgrade

He made a deliberate, explicit appeal to those who voted Tory at the last election, saying he understood why they gave David Cameron the benefit of the doubt.

BBC: I'm so Dizzy, claims Miliband