London: Election-weary British voters gave Prime Minister Boris Johnson a "powerful new mandate" in the historic polls as his Conservative Party on Friday won a commanding majority in Parliament to allow him to finalise UK's divorce deal with the European Union next month.

Johnson, 55, who vigorously campaigned on a simple slogan "Get Brexit done," vowed that he will work "flat out" to repay the trust of the voters after the Conservatives' most emphatic majority since the 1980s under Margaret Thatcher.