This comes a day after Queen Elizabeth II announced that British Prime Minister Boris Johnson had confirmed at the weekend of crucial negotiations on Brexit that London's exit from the European Union on 31 October was a priority for the government.
"My government's priority has always been to ensure that the UK leaves the EU on October 31," she told lawmakers.
She added: "My government intends to work to develop a new partnership with the European Union on the basis of free exchange and friendly cooperation."
The main stumbling block in Brexit is how to deal with Britain's only border with the European Union, the border between Northern Ireland and the Republic of Ireland.
The challenge of maintaining these borders, which support the regional economy and the Northern Ireland peace process, has dominated the Brexit talks over the past three years, since Britain voted to leave the EU in 2016.