The DUP's Brexit spokesman has said that a change in prime minister could provide a “different outcome” in the EU negotiations.
This comes as EU leaders have granted a six-month extension to the Brexit process, despite Theresa May only requesting a delay until June 30.
Sammy Wilson told talkRADIO’s Julia Hartley-Brewer: “Our view is that the best hope is to get the current government – which says on paper that it is committed delivering on Brexit – to get them to honour that promise.
“All I can say is that it might not happen under the current leader. Her approach to the negotiations seems to be ‘tell me what you want me to do and I will do it’.”
He added: “If there was a change in leadership, there would be a different outcome. The change of leadership is not up to us.
“We cannot influence that but the Conservative party certainly can decide whether the current leader is the right person to carry on these negotiations.”
The Labour party is set to continue talks with the government but Mr Wilson does not see a Corbyn-Brexit as any more appealing than the current withdrawal deal.
“Jeremy Corbyn would have us stay within the customs union,” he said.
“He would also have us stay within the single market and he would have a second referendum.
“Leaving aside his domestic policies, that is not delivering Brexit.”
The DUP spokesman said that Mrs May had missed a “golden opportunity” to tell the EU that the UK would leave without a deal after they dismissed her request for a shorter delay.