British Prime Minister Theresa May warned pro-EU MPs that she "will not tolerate" efforts to block Brexit through parliamentary manoeuvres, in a column in Friday's Daily Telegraph.
As Brexit talks resumed in Brussels, May sought to reimpose her authority over potential rebels following a chaotic week in which she lost two ministers in separate scandals.
Crucial legislation to put existing EU regulations on the domestic statute book in a bid to avoid legal chaos after Brexit is currently working its way through parliament, with many amendments already lodged.
"The EU Withdrawal Bill is the single most significant piece of legislation in this parliament because it is fundamental to delivering a smooth and orderly Brexit," wrote May.
"Where MPs think they can improve the Bill, this government will listen to them.
"But we will not tolerate attempts from any quarter to use the process of amendments to this bill as a mechanism to try to block the democratic wishes of the British people by attempting to slow down or stop our departure from the European Union," she added.