Jeremy Corbyn has accused Theresa May of being autocratic like Henry VIII by refusing to promise Parliament a vote on the final Brexit deal.
Corbyn said it would be "extraordinary" if the Prime Minister used the royal prerogative to bypass British MPs while parliaments in other EU countries were able to vote on the package.
His comments come after May refused to commit herself to giving Parliament a vote when the eventual deal is sorted out in 2019, while questioned during a select committee hearing.
The Labour leader told The Guardian: "[A final Brexit deal] would have to come to Parliament.
"She cannot hide behind Henry VIII and the divine rights of the power of kings on this one.
“The idea that on something as major as this the Prime Minister would use the royal prerogative to bypass Parliament is extraordinary - I don't know where she's coming from."
He also defended the benefits immigration brings to the British economy and said there was a "level of exaggeration" about its negative impact, while saying proposals for a work visa scheme are "fraught with difficulties".