Five months after the bootcamp and I was back in London - this time as a BBC journalist to challenge the pick-up coaches I had met.

After weeks of refusing to engage with me, I found Eddie Hitchens coaching another group of men. I asked why he pressurised women into having sex. He was outraged.

“That’s completely wrong,” he said. “That’s completely wrong. You have twisted it completely out of context… Bro. It’s an art. It’s an art... It’s completely consensual.

"We actually help men…so if anything we help prevent rape culture to help prevent them get involved in anything illegal or non-consensual.”

Richard Hood denied teaching men how to pressurise women into having sex and said all the women were recorded with their consent.

“We never film girls. We’ve had actresses,” he told me. So you’ve done nothing wrong? “Correct” And you don’t think you’re breaking the law? “Of course not.”

After I spoke to Richard Hood, Street Attraction deleted the secretly filmed video I questioned him about.

Then, shortly before my documentary film was to be broadcast, YouTube removed more than a hundred videos posted by Street Attraction.

A YouTube spokesperson told me the platform had “terminated the channels Addy A Game and Street Attraction.

"YouTube strictly prohibits explicit sexual, graphic or harassing content.

"Nothing is more important than protecting the safety of our community, and we will continue to review and refine our policies in this area.”

Another Street Attraction coach called George Massey later told me he saw his role as “helping people in the dating field”. If he has ever said anything inappropriate to a man seeking support, he said, no-one has ever told him. He said he gets letters of thanks from men who are now in healthy relationships. He added: “I don't claim to be impervious to error”.

Hitchens denied telling his students that they should approach teenagers.

“Not true,” he said. “The thing that I teach is exactly this. Find out how old the girl is before you do anything sexual, anything flirtatious… You guys are basically misrepresenting what we’re doing. It’s absolutely disgusting and we’ll see you in court.”

Meanwhile, back in Glasgow, Adnan Ahmed's trial has concluded.

One 18-year-old victim who gave evidence described being stopped in a shopping centre by Ahmed, who is now 38.

“He put his hand on my back, at my waist. He put his hand on my cheek and tried to kiss me. I threw my hands up and asked him what he was doing. There was no conversation at all. Then I asked a member of the public if I could stand next to them because I felt vulnerable and isolated. He was bigger than me so I was scared to cause a scene.”

Giving evidence, Ahmed said his approaches to women were harmless and said that he stopped as soon as he found out if they were 17 or younger.

The jury disagreed.

Ahmed was convicted of five charges of threatening and abusive behaviour and was remanded in custody for sentence.

He had already spent nine months on remand in jail.

While the case was going on, Rita was at court to support the women. She was one of the women who had blown the whistle on Ahmed’s activities, and it was her call to the BBC that set me off investigating A-Game.

Rita had thought she knew “Addy”.

They were both students at college in Glasgow where they were studying towards a degree in social work. They both lived in the Glasgow area, they shared a car pool to class.

That was until Ahmed missed a day of college, giving one of Rita’s classmates the opportunity to show the rest of the car pool exactly what Addy got up to in his spare time.

Rita was shown a series of images of Ahmed with half-naked women from his Instagram account and YouTube channel.

“I was kind of in floods of tears and thinking, what is this, is he like a pimp or is this a prostitution ring?” she said.

“I started looking at the videos and I just felt sick. I felt physically sick. It wasn’t about how to chat up a girl, it was much darker, much darker. They [the women in his videos] don’t know they’re being filmed. They don’t know they’re being recorded. So, right from the off it’s seedy, it’s underhand.”

This is the era of #MeToo. Women are fighting back against male harassment. Women like Rita, Beth and Emily are finally being listened to.

“I’ve realised, you know, it’s a universal problem” said Rita. “I just want women and young girls to be aware that there are these predatory men, in our colleges and in our workplaces."