Jeremy Corbyn has defended his decision to remain "neutral" in a second EU referendum, saying it was a sign of "strength and maturity".
The Tories poured scorn on the plan, accusing Mr Corbyn of "deciding to be indecisive" on the biggest issue facing the country.
But on an election campaign stop in Sheffield, he insisted he was offering a "sensible way forward" that could finally bring the UK together.
"I think being an honest broker and listening to everyone is actually a sign of strength and a sign of maturity," he said.
"My role as the Labour prime minister would be to ensure that is carried out in a fair way, that the offers put are fair, and that I will carry out the result of that referendum.
"I think this is actually a sensible way forward that actually can bring people together."
However, UK Health Secretary Matt Hancock said the Labour leader's stance "won't wash" with the electorate.
"He has actively decided to be indecisive on the biggest issue of the day. It won't wash with voters," he told Sky News's Sophy Ridge On Saturday programme.
"I think it is an absolute disaster. You can't ask this country to be its prime minister while not having a view on the biggest issue of the day."