Giving a statement before parliament this afternoon, the Brexit Secretary confirmed the Government intends to give MPs a say on our departure from the EU.
But if they reject the deal the Government strikes with the EU, Britain will instead leave the bloc with no deal, he confirmed.
Mr Davis said: “Parliament will be given time to debate, scrutinise and vote on the final agreement we strike with the European Union.
“This agreement will only hold if parliament approves it.
“This will include the contents of the Withdrawal Agreement, that includes issues such as an agreement on citizens’ rights, any financial agreements, and agreements on an implementation period by both sides.”
MPs will therefore have the power to approve or veto a comprehensive Brexit deal.
The move is intended to put to rest fears of a Brexit deal that would be bad for Britain being brought in without scrutiny.
Mr Davis continued: “Of course we do not yet know the exact details of this bill and are unlikely to do so until the negotiations are near completion.”
But he confirmed that MPs would vote on the deal before it was put before the European Parliament.
Responding to a question by former Conservative minister Owen Paterson, he confirmed the UK would leave with no deal if MPs rejected the agreement between Britain and the EU.
The Brexit Secretary also addressed the content of the sixth round of Brexit talks, which took place last week.
He had faced criticism over the slow pace of progress in the complex negotiations.
But Mr Davis cited significant achievements in approaching a deal on citizens’ rights, and a solution to the complex situation of Northern Ireland, which has a land border with the EU.
He also said he expected there would be some movement from the EU on voting rights for Brits living on the continent after the UK Government offered voting rights in local elections to EU citizens in Britain.
Mr Davis said the talks were expected to move on to discussing a future free trade agreement “as soon as possible”.
He lauded the Prime Minister’s Florence speech as having given talks a new impetus and push the European Commission to make concessions on trade.
As of October, he said, EU27 countries were preparing to discuss “trade and the future relationship we want to see”, and these discussions would commence in the near future.