Grant Fulker, who was a former Met volunteer cadet leader, was dismissed from the force in 2024 after an investigation launched into his action.
The 32-year-old has been convicted today (January 9) at Southwark Crown Court of sexual assault and attempted sexual assault, London Now has reported.
According to the force, Fulker abused his position of trust as cadet leader and carried the offences on February 12 into February 13, 2024, on the boy in a hotel room in Heathrow.
He pleaded guilty at an earlier hearing to three counts of misconduct in public office, for sending sexualised WhatsApp messages to the victim and another teen boy, while performing his role as a cadet leader.
Fulker was arrested in February 2024 before being charged.
Later he was dismissed in an accelerated conduct in March 2024, after indicating in court he planned to plead guilty to misconduct in public office.
He was dismissed without notice and placed on the College of Policing’s barred list, banning him from employment with the police, local policing bodies, the Independent Office for Police Conduct or His Majesty’s Inspectorate of Constabulary and Fire and Rescue Services.
Sentencing will take place on February 27.
Commander Pete Stevens said: “The actions of former PC Fulker were despicable, he abused his position of trust as a cadet leader to take advantage of these boys in the most appalling way.
“I am extremely grateful to the boys for coming forward and reporting them so we could launch an immediate investigation. This meant former PC Fulker was swiftly arrested and charged and just a month later dismissed from the Met.
“Our volunteer police cadets do an amazing job and we recently restructured our programme to reduce the number of cadets in the scheme, the age range, and some of the activities involved.
“Since these allegations came to light we have fully inspected all volunteer police cadet units across London to ensure they are operating in line with correct policies and safeguarding practices.”

