The wedding was held in front of close friends and family on Saturday, according to several newspapers.

Downing Street has declined to comment.

Work and Pensions Secretary Therese Coffey tweeted: "Congratulations @BorisJohnson and @carriesymonds on your marriage today".

Northern Ireland's First Minister Arlene Foster also wished them a "huge congratulations" on Twitter.

The Mail on Sunday reported that 30 guests were invited to the ceremony at short notice - the maximum number of attendees allowed under Covid restrictions in England.

A small number of church officials were involved in preparations for the Catholic ceremony, which was officiated by Father Daniel Humphreys, it said.

The Sun said senior Downing Street aides did not know about the wedding.

Members of the public were asked to leave Westminster Cathedral just after 13:30 BST, it added.

Ms Symonds, 33, who wore a white dress to exchange vows with the prime minister, is reported to have arrived in a limo about half an hour later.

Symonds is a former press adviser to the Conservative party and masterminded broadcast coverage for the party during the 2015 general election.

The marriage to Symonds is Johnson’s third. He first married at the age of 23 to Allegra Mostyn-Owen in 1987. The wedding was annulled in 1993 following claims he was having an affair with lawyer and childhood friend Marina Wheeler, whom he married in 1993. The couple have four children. They separated in 2018 and were divorced in 2020.