Prime Minister Sir Keir Starmer has been accused of trying to undo Brexit as he visits the Republic of Ireland this weekend.

Sammy Wilson, the DUP member for East Antrim, has warned that Brits and Unionists should watch “very carefully” what Sir Keir is doing.

He told the Sunday Telegraph: “It could be one of two things. Northern Ireland could be used as the excuse for undoing Brexit.

“Or Northern Ireland could find itself further sacrificed, where the UK government then agrees with Europe, ‘Well, look, we’re not going to complain too much about what you do in Northern Ireland, your imposition of regulations in Northern Ireland, your disruption of trade in Northern Ireland, if you’re prepared to do deals with us on the things that matter to Great Britain’.

“We warned the people of the United Kingdom that there was always a danger – despite what they said – with the Labour Party because they were never committed to Brexit.

“In fact, they were opposed to it. Keir Starmer, don’t forget, wanted a second referendum to try and undo it.

“So the Labour Party has got form on this and it will be important to watch every move that they make very carefully.”

His comments come after Sir Keir spoke of "resetting" relations with the Republic of Ireland and “reducing the friction" with the UK as he met Taoiseach Simon Harris.

Sir Keir added: “We are also resetting our relationship with the EU and I have made it very clear that I want a closer relationship with the EU.

“That is of course on security, on defence, but also on trade, reducing the friction and any business here in Ireland will tell you that reducing the friction helps and so we want to reset that relationship.”

Jamie Bryson, the prominent Loyalist activist, accused Sir Keir of trying to appease Irish nationalists.

He continued: “The British government is storing up another round of political instability in Northern Ireland by continuing the policy of Irish nationalist prioritisation and appeasement.

“Political unionists are once again going to feel pressure from the grassroots who continue to legitimately question what the point of the power-sharing arrangements is in Northern Ireland when it operates on the ethos that unionism must give, and nationalism must get.”