The Guardian said it was contacted by the person after it reported on the first, historical, allegation to be made that a female CBI worker was attacked during a London party in 2019.

The second woman claimed there was photographic evidence of sexual activity with two male colleagues while she was unconscious following a night out while working at a CBI office abroad.

She had no recollection of consent, the newspaper reported.

It added that another female employee had complained she was stalked by a male colleague in 2018 and that the business lobbying group had upheld a claim of harassment but retained the man's services.

That was despite an alleged admission of violent and sexual feelings towards the woman, the paper said.

The scandal at Britain's biggest employers' organisation has seen at least 12 women complain about misconduct and senior members consider their positions with the organisation..

A number of allegations are the subject of an investigation by the City of London Police.

The CBI said on Thursday that it had handed officers new information relating to an alleged "serious" offence.

The scandal has seen director general Tony Danker dismissed and three other current employees being suspended amid the police inquiry and a review commissioned by the body.

The CBI has made clear previously that Mr Danker was not the subject of the most serious allegations, including rape, that had been made to date.

He hit out at the organisation's handling of the affair in an interview earlier this week, claiming he had been made the "fall guy" for the organisation's failings as an employer going back before his tenure.

The second woman to make a rape allegation told the Guardian she did not blame the CBI for allegedly being raped but hit out at the culture at the body.

"I was really young and people took advantage of me after a night of drinking," she said.

Read more from Sky News:
Wet weather adds to cost of living gloom as retail sales dip
MPs call for workers' rights watchdog to bolster labour protections
Massive spike in concert and festival scams, report finds

"I blame the CBI for an atmosphere that was allowed to feed into people's sense of confidence. That they could act in this way and afterwards feel no worries, no fears of consequences. That they could feel somehow proud, in an office.

"That there wasn't a person for me to speak to in HR who I knew of and could trust.

"I want to say to other women or men at the CBI that they do great work. I hope they understand why I wanted to speak about it; what happened to me."

The Guardian said it had not reported the location or date of the alleged attack to help protect the woman's identity.

The CBI is due next week to give an update on the changes it plans to implement at the organisation following the completion of the first phase of the review, led by a law firm.

Mr Danker has been succeeded as director general by Rain Newton-Smith, the organisation's former chief economist.

Sky News has previously reported how she was parachuted into the role after its president Brian McBride told members he was unsure whether the lobby group could have avoided collapse if it had run a lengthy process to find a successor.

Mr McBride said in the wake of the newspaper's report: "The latest allegations put to us by The Guardian are abhorrent and our hearts go out to any women who have been victims of the behaviour described.

"While the CBI was not previously aware of the most serious allegations, it is vital that they are thoroughly investigated now and we are liaising closely with the police to help ensure any perpetrators are brought to justice.

"We recognise the substance of the harassment report outlined as relating to an allegation made and investigated in January 2018. The finding of harassment was upheld and a sanction was imposed.

"However, the CBI does not recognise many of the most serious elements of the Guardian story relating to harassment, including the assertion that the individual had told the CBI of feelings of a sexual and violent nature towards the victim; and that he had followed her home.

"Neither is the CBI aware and our records do not support the report that the CBI discouraged her from referring the matter to the police.

"We are rightly undertaking an urgent root and branch review of our culture to right the wrongs where we can and to reform our workplace for everyone.

"We are anticipating a further report from Fox Williams later today. The board will communicate its response to this and the other steps we are taking to bring about the wider change that is needed early next week."