Britain's Prime Minister Boris Johnson and his partner Carrie Symonds wave from the steps of number 10 Downing Street in London on December 19, 2020.  (Photo: AP) 

UK Prime Minister Boris Johnson and his girlfriend Carrie Symonds are engaged and expecting a baby in early summer

This will be Johnson's sixth children, however it will be the first child born to his 31-year-old partner.

Mr Johnson divorce with estranged wife Marina Wheeler was recently finalised. Johnson has two daughters and two sons. 

It is belived that Johnson has been dating PR guru and Tory adviser Ms Symonds for close to two years. 

A spokesperson for the couple said tonight: 'The Prime Minister and Ms Symonds are very pleased to announce their engagement and that they are expecting a baby in the early summer.'