Jeremy Hunt made a joke about Sir Keir Starmer’s weight during his heated Budget announcement in the House of Commons.
The chancellor brought up comments by top Labour adviser Peter Mandelson who said Sir Keir could do to “shed a few pounds” to appeal to voters.
Mr Hunt said: “I know he has been taking advice from Lord Mandelson who yesterday rather uncharitably said he needed to shed a few pounds.
“Ordinary families will shed more than a few pounds if that lot gets in.”
Mr Hunt then added: “If he wants to join me on my marathon training he is most welcome as well.
