Lawmakers begin debate on legislation to enshrine Johnson's divorce deal.
Boris Johnson will hold his first meeting with the new European Commission President, Ursula von der Leyen, in London on Wednesday.
The two sides will have just 11 months to settle that agreement following Britain's formal departure from the EU on January 31.
A final vote on Johnson's separation terms will come when lawmakers return from their Christmas break early next month.
British Prime Minister Boris Johnson wants to embrace Brexit and kick-start growth in Britain's stalling economy.
Top of Johnson's to-do list is a bill to ratify the terms of Britain's exit from the European Union.
Britain is due to leave the European Union on January 31, but will remain in a transitional arrangement until the end of the year.
Queen Elizabeth II will open parliament in a lavish ceremony on Thursday.
Johnson plans to pass a law guaranteeing that Britain's Brexit transition period cannot run beyond the end of 2020.
Prime Minister Boris Johnson promised to "get Brexit done" by taking Britain out of the European Union by January 31.
The removal of uncertainty surrounding Brexit allowed markets to breathe a huge sigh of relief.
The veteran socialist blamed the media for helping to cause his century-old party's worst finish since before World War II.
The Parliament will now be free to approve the divorce deal Johnson struck with Brussels so that Britain can leave without any more delays on January 31.
After months of high-level talks, negotiators presented the president with a deal that will see China ramp up its purchases of agricultural goods.
He will be able to get the divorce deal he struck with Brussels through parliament in time to meet the January 31 deadline.
Johnson says Brexit will free up the new government to concentrate on trying to grow the stalled economy.
Johnson's Conservative party had secured 362 seats -- its biggest majority since the heyday of Margaret Thatcher in the 1980s.
An exit poll after voting ended on Thursday night suggested a large majority for Prime Minister Boris Johnson's Conservatives.
Johnson had promised to forge a Canada-style free trade agreement with the EU.
The British exit poll suggested the Conservatives would win 368 seats in the 650-seat parliament, with the main opposition Labour party trailing on 191.
The Conservative leader campaigned relentlessly on a promise to "Get Brexit Done", by finally taking Britain out of the European Union next month.
The Conservatives were forecast to win a thumping 368 out of 650 seats in parliament.