The daughter of a woman involved in a Satanic sex cult has revealed how she will never forgive her "evil" mother for forcing her to sleep with 1800 men by the time she was 18 years old.

The woman, who goes by the name Annabelle Forest, says she was made to watch her own mother perform a sex act on the cult's leader Colin Batley as part of her initiation into the sick cult at the age of seven.

At the age of 11 she was raped by Batley, an event she described has "the most painful and shocking thing that ever happened”, in an interview with Wales Online.

Ms Forest has detailed her decade of sickening abuse in a new book called The Devil on the Doorstep: My Escape from a Satanic Sex Cult.

"Afterwards Colin asked me if I enjoyed it and I knew what I had to say – I had to say yes. But inside I felt like dying," she wrote in the book.

View photos Colin Batley. Source: Athena More

However, the worst betrayal followed when she was subjected to sexual abuse by her own mother when she reached 14.

“To be abused like that by your own mum beggars belief”, said Ms Forest.

"Nothing can hurt me as much as mum and that man," Ms Forest told Wales Online.

"My mother was an evil woman and I'll never forgive her."

Colin Batley and Jacqueline Marling were jailed in 2011 for the systemic sexual abuse of the girl while she was a child.

Ms Forest was forced to sleep with close to 2000 men by the time she reached adulthood in order to raise funds for the church belonging to the cult.

View photos The cover of Ms Forest's new memoirs. More

The pair’s twisted ideology was based on the Book of the Law by Aleister Crowley.

The couple made children think they were proving themselves to god by performing the sexual acts.

The book claims cult members wore hooded robes while engaging in group sex abuse sessions on Sunday evenings and that snakes were kept in the "altar" quiet cul-de-sac property.

When she was 18, and just three months after having Batley's child, Annabelle was forced to take up prostitution to fund the cult.

"I was a schoolgirl by day and a sex slave by night," she wrote in the book.

"It got so bad at one point I tried to take my own life."

Morning news break – September 22