Mr Cameron introduced "the new deputy prime minister" with the relish of a groom referring to his "wife" for the first time in his wedding speech.

Mr Cameron said he was' very lucky to have such a wonderful wife 'but suggested being told to clear his plate as a child made it hard to stay in shape.

Turning to his wife Samantha, Mr Cameron said: 'And above all I want to thank Samantha, the love of my life.