Serial killer Rose West - who has spent the last thirty years behind bars for her depraved crimes - spends her days in isolation and has become increasingly frail, it has been revealed.

Rose and her husband Fred remain among Britain's most prolific serial killers, after they carried out a campaign of abuse so vicious that they were branded 'the epitome of evil.'

Between 1967 and 1987, the deviant couple tortured, raped, and murdered at least 12 young women in Gloucester, before Fred died by suicide and Rose was sentenced to life in prison in 1995.

Three decades later, Rose - who has since changed her name to Jennifer Jones - remains an inmate at women's only HMP New Hall in West Yorkshire.

New details of her life in prison suggest that she spends her days alone in her cell knitting and watching nature documentaries, The Sun reports.