Inspectors say they are very concerned about safety at a prison in North Nottinghamshire where four people have died in the past year.
The report into conditions at Ranby Prison, near Retford, found high levels of violence and serious problems with prisoners self-harming.
The Chief Inspector of Prisons Nick Hardwick described the prison as "frightening":
The National Offender Management Service says the prison governor at Ranby has taken action to address the concerns raised in the report and significant progress has been made since the inspection.
A prison nurse from West Yorkshire who had an affair with a convicted rapist at a top security jail has been ordered to be struck off the register.
Karen Cosford had a relationship lasting several months with Brian McBride, who was serving a life sentence at Wakefield Prison, and was jailed in 2012 for three years.
She denied all charges but was found guilty of misconduct by engaging in a sexual relationship with an inmate. She was also found guilty of failing to tell prison authorities that McBride had a mobile and bringing in top-ups on behalf of the prisoner.
Cosford, of Normanton, who worked in the jail's medical centre, claimed McBride raped her then intimidated her so she would not report it.
But jurors at Leeds Crown Court rejected the claim after hearing how she became inappropriately close to McBride and struck up a sexual relationship.
We've been given exclusive access to a young offenders unit which two years ago drew damning criticism from prison inspectors who said they "feared for all its inmates."
In 2012 Wetherby Young Offenders Unit was censured for the vulnerability of the young people held there, but a new report shows progress has been made.
Although there's still concerns about group attacks and self-harming, the unit is working with its inmates to improve standards.
Michael Billington reports on the life of teenagers behind bars.
HMP & Young Offenders Institute Wetherby manages a challenging population well, according to a report by Nick Hardwick, Chief Inspector of Prisons.
The findings come after an unannounced inspection of the Yorkshire young offender institution.
Outcomes for young people were reasonably good or better across all four healthy prison tests: safety, respect, purposeful activity and resettlement.
Prison staff held a protest in Northallerton today. The prison is due to close, with the loss of almost 200 jobs. The Government wants to close four prisons in total, in favour of two new high-capacity 'superjails'.
Staff are being offered relocation, but with the nearest jail over an hour away, it's feared many will have little choice but to choose redundancy.
Staff have held a protest outside Northallerton Prison which is to close with the loss of almost 200 jobs. The Government wants to close four prisons in total, in favour of two new high capacity 'superjails'.
Staff are being offered relocation, but with the nearest jail over an hour away, it's feared many will have little choice but to choose redundancy. The Union leader held an open meeting early this morning and our correspondent Rachel Bullock was there:
Northallerton Prison is to close with the loss of 135 jobs. The Ministry of Justice announced the news as part of its plans to modernise British Prisons.
The news has dismayed many people because of the job losses it will mean in Northallerton, and because of the impact it may have on our prison service.
The Justice Secretary Chris Grayling has told ITV News that the Government's modernisation plans for prisons, which will see Northallerton Prison close, will save around 30 million pounds a year from the prisons' budget.
The POA has condemned the announcement by the Secretary of State for Justice that he intends to close four prisons - including one in Northallerton, North Yorkshire.
It says the prison service is in crisis, with staffing levels and morale at an all-time low and that the closures come "at a time when 20,000 prisoners are being held in an overcrowded prison estate, alongside the unacceptable level of violence and serious assults."