ITV News understands that one of the alleged victims is this woman, Josephine, who is now believed to be 57 years old.
She is pictured here as part of an ITV documentary in 1997 about the death of Sian Davies, who died after a fall from the window of a house used by the group.
Press reports from 1978 say a then 22-year-old commune member, Josephine Herival, was arrested during a police raid on the group's headquarters in Brixton. Sian Davies was also arrested at the same time, according to the reports.
Josephine, pictured here, is believed to be the Irish woman mentioned in recent police reports.