HIDDEN behind rows of unassuming terraced houses in North London is a wrestling gym with a difference.

Within the confines of the padded Submission Room, men pay to be grappled to the ground, sat on, twisted, bruised and even knocked unconscious by scantily-clad women.

18 Professional wrester Pippa The Ripper holds client Steve 'Monkey Boy' in a camel clutch hold Credit: Barcroft Media

And owner and wrestler Pippa The Ripper says business is booming.

She says: “It’s the sort of business that can vary and fluctuate from week to week but I would say on average we have 15 to 20 men that come every week and we charge £150 a session.

“Session wrestling is something that is definitely growing in popularity the more people find out about it.”

18 Professional wrestlers, from left, Pippa The Ripper, Pussy Willow and Amethyst Hammerfist at The Submission Room in North London Credit: Barcroft Media

18 Pippa seen wrestling Steve, who can think of nothing better than 'rolling around with pretty girls' Credit: Barcroft Media

Dressed in a Wonderwoman one-piece, Pippa’s days are spent answering calls from clients and taking bookings for the week.

She asks callers if they have any fantasy scenarios or if they want to go up against any particular girl from Pippa’s impressive 23-strong roster of professional female fighters.

The 31-year-old has been wrestling ever since she answered an advert in a paper ten years ago and she opened The Submission Room in 2011.

Pippa says: “The majority of our sessions are semi-competitive but you do get some who want a fantasy session.

18 Professional wrestler Pippa The Ripper says business is booming Credit: Barcroft Media

“There are some men who call with unusual requests but it’s mainly just to do with outfits.

"Some guys specify that they want us wearing tights. Sometimes a skirt. Nothing too crazy and as long as the girls are comfortable, we accommodate them.”

The first time Pippa tried session wrestling, she knew she had found something she loved and she struggles to think of what else she would do with her life.

18 Pippa insists most of the men who visit the gym don't want anything too risque Credit: Barcroft Media

18 Professional wrestler Amethyst Hammerfist warms up her muscles ahead of her wrestling session Credit: Barcroft Media

Pippa says: “I just absolutely love it. The guys that come here come for all sorts of different reasons. Some are married, some single, some in relationships.

“The youngest guys we get are 19 and the oldest is about 70.

18 Pippa seen with Steve. Men who visit the gym vary in age from 19 to 70 Credit: Barcroft Media

“It’s really good fun and a good way to keep fit. And for some guys it is a sexual kink or fetish.

“For me personally, it’s not a fetish but I do get a kick out of it. It makes me feel really powerful and I still get excited going in the ring against a big burly guy.”

Although Pippa’s duties are now primarily managerial, she still enjoys a tussle with her male clients.

One of her many regulars is council worker, Steve.

18 Professional wrestler Pussy Willow overpowers client Wilfred Credit: Barcroft Media

18 Pippa The Ripper still does some wrestling, but her job is mostly managerial these days Credit: Barcroft Media

Twice divorced, Steve is a wrestling fan with a foot fetish.

He is open with his 33-year-old daughter, and pretty much everyone in his life, about the unconventional way he spends at his weekends.

The 59-year-old can remember fondly watching wrestling on TV as a young boy and says that with the advent of the internet, he decided to research some of his old favourite wrestlers.

18 Pussy Willow shows off the muscles which make men go weak at the knees Credit: Barcroft Media

18 Amethyst Hammerfist gets to grips with Wilfred. She admits she loves knocking people unconscious Credit: Barcroft Media

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He says: “Wrestle girls just sort of came up and I thought it sounded really sexy, so I started looking into it and I realised it’s a proper business and there are lots of people doing it.

“I come here as often as I can now.

“I don’t want to roll about on this floor with a sweaty bloke. No offence to people that do and I’m not homophobic or anything. I’d just rather be rolling around with a pretty girl that’s all.

18 Amethyst Hammerfist is one of The Submission Room's 23-strong roster of wrestlers Credit: Barcroft Media

“The girls here are all like my daughters. Most of them are slightly younger than my daughter.

“It’s like having a whole different family.

“My mum passed away a year or so ago. She knew I did it as well. It’s not anything to be embarrassed about.”

18 PPippa The Ripper overpowers client Steve 'Monkey Boy' during their wrestling session Credit: Barcroft Media

Pippa is clear that the wrestlers at the gym do not have sex with any of the clients and Steve says that’s fine by him.

“I wouldn’t pay for sex with a woman because sex is easy. That’s easy to get sorted out. Domination by someone who knows what they are doing is different.

“It’s just so amusing to be pinned down and hurt by little girls. I mean what’s not to love?!”

At a session with The Ripper, Steve is down on all fours whilst Pippa pushes him by the shoulders.

“Are you going to fight back?” she teases.

18 Amethyst Hammerfist holds client Wilfred in a body scissors hold Credit: Barcroft Media

Within seconds he's pinned to the ground, his pained expression only visible in between her muscular thighs.

Men can "tap out" if they find the pain too intense but Amethyst Hammerfist says that some clients specifically request to be knocked out - and it’s her favourite thing to do.

The purple-haired former stripper said: “It’s very sensual. The guys have to consent to it and a lot of guys request that I do NOT knock them out because they know I love it so much.

18 Pippa The Ripper gets client Steve in a head scissors hold Credit: Barcroft Media

“In the last year and a half I have knocked quite a few guys out. It’s amazing, especially if it is during a session that is really intense and it can be electric.

“I love to knock guys out with I’m looking at them right in the eyes.”

Pussy Willow, 30, is another of the Submission Room’s fighters.

18 Pussy Willow gives Wilfred hell Credit: Barcroft Media

18 Clients like Wilfred love being dominated Credit: Barcroft Media

She began wrestling after working as a dominatrix.

She said: “When I found wrestling, I felt like I had found my true calling.

“I have always loved being strong and now I get to be a strong woman but in a really sensual way.

“Men that come here don’t expect sex, they come here to wrestle. If they wanted sex, they’d go and see a prostitute.

18 Pussy Willow and Wilfred are seen squaring up at the wrestling gym Credit: Barcroft Media

“I actually think what we do is one of the nicest things that you can do for someone because we are letting people come into our world and accepting them for who they are with no judgment on the basis of their sexuality. And making them happy.”

Couples can enjoy wrestling too. We previously reported on a pair who love covering each other in chocolate before a session.

Plus there's a dominatrix in Glasgow who charges £150 to cover her clients in custard in her S&M dungeon.