Daniel Hannan, Adviser to the UK Board of Trade and former Conservative MEP, said on Twitter the EU’s “defence of the Protocol is based on a lie”.
He added the EU’s stated objectives, including “keeping sausages out of Donegal”, are “not its real objectives”, which are “creating an all-Ireland economy”.
He also said: “The lie is as follows. The EU publicly maintains that its sole concern is for what it calls ‘the integrity of the Single Market’.
“If so much as a single British pork pie were to cross into Co Cavan, it insists, the Customs Union would be prejudiced and its common rules made worthless.
“Eurocrats have repeated this assertion so often that I think even they have, on some level, come to believe it.
“Naturally their British devotees, who allow no criticism of European institutions, treat the claim as Holy Writ.”