..........on a 15 year old girl.

https://www.btp.police.uk/news/btp/news/in-the-courts/btp-officer-convicted-of-assault--london/

There was obviously CCTV as some of it has appeared on the tabloids websites

I've seen some CCTV which only showed some of the incident without any audio. 

The problem is, there's far too many of that age, on and away from the railway, who think or know that they are untouchable by the law.  Outcomes like this only serve to make the lives of police officers even harder.  If they think they're untouchable by the law at 15 years old, they'll always think that way.  In a years time, they'll be considered responsible enough to vote!

In this particular instance, you need to see the full CCTV of the incident with audio to draw a conclusion.  There's obviously barrier staff present who didn't consider the response of the police officer to be heavy handed enough to intervene.  Barrier staff told the two individuals they couldn't come through without a ticket yet they choose to ignore the advice and pushed their way through the barrier, a clear lack of respect.  That 15 year and all her friends now know they can all just push through the barriers and nothing will happen.   

Interesting you originally posted about finding the full facts, but then the post above makes all king of unfounded assumptions about the situation, conjecture at its worst!

As a point about the staff not stepping in, when has anyone ever stopped BTP or the wider police force from stopping doing something wrong.... It simply would never happen for fear of reprisals

The problem is, there's far too many of that age, on and away from the railway, who think or know that they are untouchable by the law

Indeed. Far to many police officers, from raw recruits to seasoned veterans, who think they can get away with breaking the law to enforce the law. Often they are untouchable. Colleagues covering for them, lying in statements, lying in court. The few that get caught are the tip of a very large iceberg.

So, the perception of an 'increasing prevelence' isn't borne out by the statistics. Even with today's social media and instant news hasn't it always been the case of older generations decrying modern youth?

Police officer sentenced over teen headlock

A police officer who put a 15-year-old girl in a headlock while arresting her for pushing through a ticket barrier has been given a community order.

PC Adrian Young was convicted of assault by beating last month following a trial at Westminster Magistrates' Court. The 48-year-old, of Spalding, Lincolnshire, has been sentenced to a 12-month community order, including a rehabilitation activity requirement of 10 days, and 150 hours' unpaid work.

British Transport Police (BTP) described Young's actions as "appalling", adding that he had demonstrated "a completely unnecessary and unacceptable use of force against a child". He remains suspended from duty.

BTP officers responded to a request for assistance from railway staff on 22 September 2024 after the girl pushed her way through ticket barriers at Camden Road Overground station.

CCTV footage played to the court showed Young restraining the girl by placing her in a headlock. She remained in the headlock for about 30 seconds before the constable pushed her back through the ticket barrier and placed his hand around her throat while pushing her up against a ticket machine.

Young, who has served in the police for more than 19 years, handcuffed and arrested the child. She was later de-arrested at the scene.

District Judge Nina Tempia said the incident would have caused the girl "psychological distress".

Prosecutor Barto De Lotbiniere told the court: "There's clear evidence to say this is a victim who was vulnerable due to her age and also the circumstances of the time."

Defending Young, Kevin Baumber said the officer had used "excessive force in a lawful detention" and there was "no choking and no strangulation". Mr Baumber added: "The mistakes Mr Young made were all in flow of an active incident that was made more difficult by an act of physical resistance by the complainant. In a situation where there was grounds for lawful detention, there was also active verbal and physical interference by her friend that made the job the defendant was trying to do more difficult."

BTP Assistant Chief Constable Sean O'Callaghan said: "I'd like to be absolutely clear that the actions of PC Young during this incident were appalling, demonstrating a completely unnecessary and unacceptable use of force against a child. Police officers are rightly expected to maintain control of any situation and by not doing so, PC Young has undermined public confidence in BTP and the high standards we hold our officers to every day. We thank the IOPC for their investigation and will be looking to progress with internal disciplinary proceedings as soon as possible."