Mr Umunna blasted the official cross-party Brexit campaign, suggesting delivering anything less than their £350million-a-week promise to the NHS would be seen as a “gross betrayal” by Britons.
However, speaking to the BBC from Westminster, Mr Bone, founder of the Grassroots Out campaign, insisted that his counterpart stop reliving the campaign and concentrate on delivering Britain’s Eu departure.
“Theresa May says, ‘Brexit means Brexit,’ if it does mean something, it means £350million extra per week will go into the NHS,” claimed Mr Umunna.
“Your viewers will remember that big red bus, which several Cabinet ministers – Boris Johnson, Chris Grayling and others – stood next to, basically, promising to British people if you vote to leave there’ll be extra money going to the NHS.
Peter Bone blasted Chuka Umunna for reliving the Brexit campaign
You’ve had your say – come on, let me have a say
“I’ve put down an amendment to this bill requiring the Prime Minister to set out her plans to put extra monies into the NHS as was promised by her Cabinet ministers.
“I’ll tell you something, if they renege on that commitment that will be considered a gross betrayal of so many people who voted to leave the European Union.”
Given his chance to reply, Mr Bone suggested that “rerunning the referendum” is an irrelevance, before being interrupted by the Labour MP.
The Grassroots Out figure then delivered a withering blow to Mr Umunna, he interjected: “Hang on! You’ve had your say – come on, let me have a say…
“Shouting down people doesn’t really help. Article 50, the process of triggering Brexit, once it has passed both houses of Parliament as an act of Parliament and the letter has been sent – we are coming out of the EU.
“All the debate then after is how we come out and how that happens. This is a very simple thing today – we are implementing the wishes of the British people through a referendum that we are going to come out of the EU.”
Labour MP Gisela Stuart, who toured the country in the red bus carrying the now infamous pledge to redirect £350million of EU contributions to the NHS, recently defending the slogan while speaking to Express.co.uk.
Ms Stuart, who chaired the Vote Leave campaign, said she was “still very happy” to defend her campaign’s tactics.
Theresa May's 12 point Brexit plan
Mon, January 16, 2017
It's finally here!
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Continued cooperation with the EU to tackle terrorism and international crime.
She added that despite the political jousting between the two campaigns she has no regrets with the way Vote Leave persuaded Britons to leave the EU.
“The official statistics say that gross contribution is £19.2billion – that over which we have no control – I would spend more money on the NHS.”
Mr Umunna added that it was the role of Remainers to campaign promises are now “delivered on”.
“I’m sorry, I will not have this constant accusation that we are trying to relitigate the referendum,” he said.
“All we are simply trying to do with this £350m commitment, and you may say that it’s a porky but we’re trying to make sure that is delivered on.”