The biggest prison in the country, HMP Oakwood, has been slammed by inspectors.
HMP Oakwood, which can hold 1,600 prisoners, had inexperienced staff and high levels of violence and self-harm, said HM Inspectorate of Prisons following a surprise visit.
The report found that the prison, known as "Jokewood", needs to address its approach to the near-300 sex offenders it holds, many of whom were due for release without their offending having been addressed.
G4S, which runs the prison, says it has already taken steps to make improvements.
More top news
A car ended up on a motorway embankment and got stuck in the trees after the driver lost control.
A couple who recently purchased a vehicle discovered that it was stolen and have consequently lost £13,000.
The last pictures taken of a pair of friends from Birmingham, who drowned while on holiday in Malta, have been released.