Police have closed an investigation into an alleged drug-fuelled orgy on Primrose Hill.

No charges will be brought against a group of youths who were accused of passing around a teenage girl on the beauty spot.

Officers could not substantiate the witness claims and enquiries have been brought to a halt.

Det Chf Insp Les Newman said: “Further investigation around the reports cannot be corroborated and the investigation has been closed.”

Police had initially believed the girl involved in the incident, thought to be 14 or 15-years-old, was being “initiated” into a gang.