In 1987, Hindley admitted that the plea for parole she had submitted to the Home Secretary eight years earlier was "on the whole ... a pack of lies", and to some reporters her co-operation in the searches on Saddleworth Moor "appeared a cynical gesture aimed at ingratiating herself to the parole authorities". Then Home Secretary David Waddington imposed a whole life tariff on Hindley in July 1990, after she confessed to having been more involved in the murders than she had admitted. Hindley was not informed of the decision until 1994, when a Law Lords ruling obliged the Prison Service to inform all life sentence prisoners of the minimum period they must serve in prison before being considered for parole. In 1996, the Parole Board recommended that Hindley be moved to an open prison. She rejected the idea and in early 1998 was moved to the medium-security HM Prison Highpoint; the House of Lords ruling left open the possibility of later freedom. Between December 1997 and March 2000, Hindley made three separate appeals against her life tariff, claiming she was a reformed woman and no longer a danger to society, but each was rejected by the courts.