Peers defied the government and voted by almost 100 to give Parliament a veto of the Prime Minister's final Brexit deal before it is signed Peers voted 366-268 (majority 98) tonight to give Parliament a chance to veto the Prime Minister's final exit deal with the EU before it is signed.
Both amendments will now be passed back to the House of Commons early next week - where it's understood the PM will fight to scrap them.
But she faces a rebellion by Tory MPs on the veto because last time MPs voted on one, seven Tory revolted against her to back it.
Tonight's vote came after a passionate final day of debate in the upper chamber on the Bill, which gives Mrs May the power to pull two-year EU exit trigger Article 50.
She was forced to draw up the two-line Bill by the Supreme Court, and peers slammed her for not giving more detail or guarantees.
Critics were furious when it emerged she'd give Parliament a vote on the final deal - but leave with no deal anyway if it gets rejected.
Tory grandee Lord Heseltine rebelled to back giving Parliament a veto - saying the UK was facing "the most momentous peacetime decision of our time".
He told a packed House of Lords: "My own personal position has been clearly established since I first joined the Conservative Party in 1951.
"I believe and always have that Britain's national self-interest is inextricably interwoven with those of our European partners. I deeply regret the outcome of the referendum."
Peers voted down a separate amendment that would have given the British people a second referendum on the terms of Brexit .
Those speaking against it included the Archbishop of Canterbury, who said it would "deepen the bitterness" over Britain's relationship with the EU.
Justin Welby - one of 26 religious figures who get a plum seat in the Lords - stressed the need to find "a level of national reconciliation''.
And Tory peer Lord Forsyth told the Lords: "These amendments are trying to tie down the Prime Minister.
"Tie her down by her hair, by her arms, by her legs, in every conceivable way in order to prevent her getting an agreement, and in order to prevent us leaving the European Union."
The amendment will now go back to the House of Commons, we must do all we can to fight back, we must not let this pass the House, where there is both appetite and will to do just that.
The anti-Brexit alliance continue to do all they can to sabotage our negotiations with the EU. they continue to damage our reputation internationally and they continue to reject democracy.
We need to work together, now more than ever, for our history depends on it.
This article has used extracts taken from the Mirror
Labour Leave shares a number of viewpoints from external commentators, both Leave and Remain, without necessarily endorsing any of the viewpoints therein.
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