The leaders of the Core Cities group have urged all MPs to ensure the devolution agenda remains an absolute priority over the next Parliament.

Leaders and mayors from all 10 members of the group – which includes Birmingham, Bristol, Cardiff, Glasgow, Leeds, Liverpool, Manchester, Newcastle, Nottingham and Sheffield – will meet tomorrow at a mini-summit in Westminster to debate the next steps needed to ensure a far greater transfer of funding and economic powers from Whitehall to localities.