The outgoing Prime Minister of the United Kingdom (UK), Boris Johnson, accompanied by his wife, Carrie Johnson, left the PM's office at 10 Downing Street in London

Before that, he made his last speech as the head of the country, in which he announced his support for FM Liz Truss, who will replace him as Prime Minister.

Johnson called on conservatives to put aside all differences and unite.

Truss was elected the leader of the ruling Conservative Party of the UK last week, and she will assume the post of Prime Minister on Tuesday.