PC Samuel McGregor, 33, was found guilty of rape on Friday following a trial at Inner London Crown Court.
He had previously pleaded not guilty to rape at the same court on June 23, 2023.
Chief Superintendent Andy Carter, in charge of policing for Central North: “I am sickened by McGregor’s abhorrent behaviour and the pain he has caused the victim.
“There is simply no place for individuals like McGregor in the Met, and we will continue to root out such vile individuals.
“I am proud of the officers who throughout the investigation displayed the care and compassion deserved by the victim, as they carried out interviews and gathered forensic evidence to show the extent of the abuse and develop a watertight case against McGregor.
“Above all, I am pleased to see today’s result, which I hope brings some closure to the victim.
“Now that criminal proceedings have taken place, McGregor will face a misconduct hearing at the earliest opportunity.”
The court heard that the victim, who was known to McGregor, had been raped on May 11, 2021 at an address in London.
She confided this incident to her colleagues at a later date, and they reported it to officers on the victim’s behalf on June 2, 2021.
McGregor was arrested the day after, on suspicion of rape.
A misconduct hearing will take place in due course and a sentencing will be held on March 10.
McGregor was suspended from duty on March 3, 2022 after he admitted lying during a police interview.