Prime Minister Boris Johnson has sent an unsigned letter to the European Union requesting a delay to Britain's exit from the bloc.
The request was accompanied by a second signed letter arguing against it.
Johnson also sent a third letter, penned by Sir Tim Barrow, the UK's Permanent Representative in Brussels, that clarified that the first letter was from Parliament and not the government.
The letters were sent after MPs on Saturday voted by 322 to 306 to request an extension until January 31, 2020.
EU Council President Donald Tusk tweeted that he had received the extension request and would now consult EU leaders "on how to react".

At least 14 killed in explosion at weapons depot in Syria
US hits five Iranian oil tankers after attack on Navy ships
UK gives air traffic provider a week to probe outage that halted flights
Serbia's President Vucic dissolves parliament, calls snap elections
With large crowds attending, Norway lays King Harald to rest
Jordan intercepts 18 Iranian ballistic missiles
Air traffic control issue disrupts flights at major UK airports
At least 73 injured after Houthi rebels attack Saudi civilian and energy facilities
