Queen Elizabeth II has emphasised the need for Britons to come together to "seek out the common ground", in what is being viewed as an appeal to overcome bitter divisions over Brexit.
The British prime minister is expecting the European Union to give further clarification on the backstop arrangement to maintain an open Irish border after Brexit.
British Prime Minister Theresa May has defended her anguished draft divorce deal with the European Union before rowdy lawmakers and a splintered cabinet that threatens to fall apart.
The main sticking point in Brexit negotiations is how to keep Britain's land border with the Republic of Ireland open after it leaves the European Union.
Northern Ireland's DUP, which is threatening to bring down the British government over Brexit compromises, is a party with hardline views whose negotiating tactics were forged in war.