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The comments left fellow panellists on debate show The Agenda on ITV up in arms after the former Labour leadership candidate was asked by Piers Morgan if he was prepared to vote against the 17.4million people who voted Leave in the EU referendum. The Labour MP, who campaigned for Remain, replied: “Yes, in respect of this [Brexit], I absolutely am. Because what I will be doing is exercising my duty in my view, my responsibility to act on behalf of my constituents.” Mr Smith was heckled by fellow panelist investment manager Gina Miller, who led the Article 50 High Court case, as she repeatedly shouted “Shame on you”. Morgan asked the MP if he thought it was okay to “defy democracy”.

ITV/THE AGENDA Piers Morgan clashed with Owen Smith over his stance on MPs voting against Article 50

What I will be doing is exercising my duty in my view, my responsibility to act on behalf of my constituents Owen Smith

The Pontypridd MP replied: “50 per cent of my constituents voted to leave, 50 per cent didn’t – my view is still that Brexit is going to be bad for us in the long term.” The heated exchange comes after Mr Smith insisted the public did not vote to leave the single market. He said: “I think we should be very clear that nobody voted explicitly to leave the single market. “There was a myriad of different scenarios that were laid out, including extra money for the NHS and different versions of leaving Europe, what wasn’t clear was we were definitely going to leave the single European market.”

Things you may not know about remoaner Gina Miller Thu, March 2, 2017 Gina Miller is leading the challenge that has blocked Theresa May triggering Article 50 without the consent of Parliament Play slideshow Getty 1 of 10 Gina Miller has won the case to block Theresa May from Article 50