A Metropolitan Police volunteer officer has been found guilty of raping and sexually assaulting a child.

James Bubb, who now identifies as a woman named Gwyn Samuels, groomed one of his two victims online before sexually assaulting her when she was just 12 years old.

The 27-year-old, from Chesham in Buckinghamshire, was also found guilty of raping a woman he met online while posing as a 16-year-old girl.

Amersham Crown Court was told the defendant, who still identified as male at the time of the alleged offences, would be referred to by biological sex throughout the trial.

The offences took place between 1 January 2018 and 2 April 2024.

The trial was told that Bubb met his first victim on the online chat site Omegle in 2018 – before meeting in person for the first time at a Christian festival a few months later.

Prosecutors said Bubb was working as a volunteer steward and the victim was wearing a colour-coded child’s wristband that was clearly on show.

The officer sexually assaulted the girl in public shortly before her 13th birthday and was forced to pull his trousers up after a dog walker went past him.

Bubb was found guilty of one count of raping a child under 13, one count of sexual activity with a child, one count of assault of a child under 13 by penetration, and one count of assault by penetration – all relating to the same complainant.

Jurors were told Bubb was violent towards the girl when he raped and sexually abused her – with the victim telling police he choked and punched her.

He was found not guilty of one count of rape and one count of sexual activity with a child in relation to the same complainant.

Bubb was also found guilty of one count of rape against a second complainant.

Judge Jonathan Cooper told jurors after the trial: “This has been a very challenging case, I’m sure, for you as individuals.”

He had asked jurors not to discuss the case with other individuals, but said: “I recognise that’s a very big ask when dealing with counts that would be very, very difficult to hear.

“In this case you heard a range of things that may have been familiar to you, that may have been unfamiliar to you, and may have been unwanted.”