Inmates at a Nottinghamshire prison have too little to do, according to a new report.
The report says not enough prisoners are kept busy
An unannounced inspection was carried out at privately-run Lowdham Grange by the Prison Inspectorate in March.
The main thrust of the report shows the prison is well-managed, but inspectors found 100 prisoners on average were not busy enough.
The study also said low staffing levels identified four years ago are still a problem.
Chief Inspector of Prisons Anne Owers said the prison is generally doing a good job and is "managing some difficult prisoners well".
But she said: "They must provide more purposeful activity for the prisoners because that is very important."
She said the prison has "a low staffing level, inexperienced staff and a high staff turnover", but added the prison does have control of its prisoners.
Lowdham Grange prison director Peter Wright said it was a good report that showed a "well-managed, calm and safe prison".
"Prisoners feel safe, the staff feel safe and I feel safe."
"This was a successful inspection - it was an unannounced inspection and we did well," he said.
The report added the prison must review its management of race relations and foreign nationals and promote diversity.
The document also suggested the jail needs to change its policy towards anti-bullying, suicide and self-harm.