Thousands of women are naming and shaming their ex partners on Facebook with claims of infidelity, domestic abuse and rape.

The victims are posting allegations on the social media site on closed pages known as P***k Advisor, with some groups boasting up to 100,000 members.

Women who upload information to the site say they are doing it to warn others, but experts say they risk putting themselves in harm's way, and men claim they may be targeted by false accusations.

Allegations range from cheating and catfishing, where someone pretends to be someone else online, to serious abuse cases.

The alleged perpetrator's name, location and photo is uploaded, and can be viewed by all the other members of the group.

Samantha Wright, is an administrator of one of the P***k Advisor groups, told the BBC's Victoria Derbyshire programme, that women are being failed by the authorities.

She said the official initiative - dubbed Clare's Law - which gives women potential access to a partner's criminal history, is not publicised well enough by police.

She told the BBC: 'Women are being failed by the system. There wouldn't be that many women in these groups if the women weren't feeling like they needed that support.

I don't think (Clare's Law) publicised enough, whereas with the group you've got something that's straight there, to hand, where you can just type in somebody's name and just see straight away if they're on there.

Claire, who was abused by her violent ex, told the BBC programme that she was 'pushed, dragged around, and thrown on the floor' by her ex-partner.

Samantha Wright, is an administrator of one of the P***k Advisor groups, told the BBC's Victoria Derbyshire programme, that women are being failed by the authorities

She added: 'You don't want to see another person move on, and then go on and do the same thing they've done to the last person, to the next person and the next person.

Claire, who was abused by her violent ex, told the BBC programme that she was 'pushed, dragged around, and thrown on the floor' by her ex-partner.

After he ex was charged with battery, Claire moved away to protect her children, and warned other women of his violent past.

She says she is one of 'an army of women, looking out for each other all across the country'.

The victims are posting allegations on the social media site on closed pages known as P***k Advisor, groups that boast up to 100,000 members

She said: 'Just knowing that one person can be free from him, that feels like an accomplishment.'

It says the abuse has left her with depression, and days where she feels unable to open the curtains, or leave the house.

Up to 1.3 million women experienced some form of domestic abuse in the year ending March 2018 in England and Wales, according to the Office for National Statistics.

But only 18% of those who were targeted by their partner reported it to the police.

Charity Women's Aid fears posting on the groups presents 'serious risks'.

Lucy Hadley, from the charity, said: 'With unmoderated, private groups, there are a lot of risks that come with speaking out, about such serious crimes.'

Lucy Hadley from Charity Women's Aid says posting on the groups presents 'serious risks'

She also said there is the possibility that women posting allegations could end up in court being prosecuted for libel.

Marie, not her real name, had her ex-partner's full name, location and picture posted on the site by a friend.

It included an allegation that he had raped Marie's young daughter, and warned others about him being near children. He was never prosecuted.

However, by allowing anyone to post claims, men fear there is a risk they could be targeted by false accusations.

On P***k Advisor, women can post about men who have never been convicted.

'Billy' who was accused of abusive behaviour, told the programme: 'How can I go on there an prove my innocence when this woman that I oly met for a short while everything. It actually scared me to leave my apartment.'

Facebook told the BBC in a statement that it has 'strict rules on what is and isn't allowed, and [we] don't tolerate harassment and bullying that targets people or 'names and shames' them'.

It added: 'However, for criminal allegations such as sexual harassment or assault we recognise that it's important that people have the ability to raise awareness, therefore in these instances, depending on the context, we will leave these comments up.'