The Government have defeated the first opposition amendment to their flagship Brexit legislation.
Backed by Plaid Cymru and the SNP, the proposed amendment to the EU Withdrawal Bill would have forced Theresa May to win the consent of the UK's devolved administrations before repealing EU legislation.
But, the amendment was defeated 318-52 as MPs continue their line-by-line scrutiny of the bill.
Later, on the first day of the bill's committee stage in the House of Commons, the Government also comprehensively won a vote (318-68) on the bill's provision for the 1972 European Communities Act to be repealed on exit day.
The Act currently gives EU law supremacy over UK national law.
More than 400 amendments have been tabled to the EU Withdrawal Bill, which is designed to convert EU law into UK legislation by the end of March 2019.
The Government have been warned of potential rebellions during the bill's lengthy committee stage, with Conservative backbenchers having raised concerns about the use of so-called "Henry VIII" powers.
On Tuesday, prominent Remain-supporting Tories also focused their anger on an amendment tabled by the Government itself, which would include an EU exit date of 11pm on 29 March, 2019 within the legislation.
Ex-chancellor Ken Clarke branded the amendment "ridiculous and unnecessary", adding: "It could be positively harmful to the national interest."
Former attorney-general Dominic Grieve described the Government's action as "mad" as he vowed to vote against the "unacceptable" proposal.
Tory backbencher Anna Soubry could be heard branding her fellow Conservative MP Bernard Jenkin a "disgrace" as he told the House of Commons: "Any MPs who voted for Article 50 but then do not want to fix the date are open to the charge that they don't want us to leave the EU."