Boris Johnson is moving into Downing Street with his partner, Carrie Symonds, after weeks of speculation about whether she would join him.
The new prime minister will occupy the large flat above No 11, despite the chancellor, Sajid Javid, having a bigger family with four young children.
Johnson’s deputy spokeswoman said the couple would be moving in officially on Monday, with Symonds taking up residence there with him.
There had been speculation that she might not join him in Downing Street after she was seen moving furniture into a house in south-east London with her mother.
Johnson and his partner have not been seen publicly together since they were recorded by a neighbour in Camberwell having a late-night row during the leadership contest.
However, Symonds joined staff members and supporters of Johnson outside the steps of No 10 as he entered for the first time as prime minister last week.
Johnson split with his second wife, Marina, last September. The couple had been together for 25 years.
Johnson is not thought to be moving any of his children into Downing Street, and the spokeswoman declined to comment on whether they would get police protection as members of the prime minister’s family.
After reports that Johnson had asked for new furniture to be bought, his spokeswoman said: “There will not be any additional cost to the taxpayer of her [Symonds] living there.”
Symonds is not believed be getting taxpayer support for an adviser or a clothing budget as some previous occupants of Downing Street have done.
Javid is expected to stay in his family home in west London rather than move to the two-bedroom flat above No 10.
