Conservative Party Conference 2014: Boris Johnson arrives in Birmingham

Boris Johnson was greeted by flashing cameras and reporters posing questions as he entered the Conservative Party Conference in Birmingham.

Responding to Mr Osborne's speech during a visit to a factory in Newcastle-under-Lyme on his way to the conference, London Mayor Boris Johnson said: "If you want to have the cash to pay for the whole of society, then you need the economy to be going gang-busters.

"The most important thing for us in the UK economy is you've got to reform welfare and it's quite right that you should be looking at ways of improving how it's spent, but you've got to get the economy moving because that's the way to pay for the whole she-bang."