Hewell prison in Redditch has been heavily criticised in a damning report, claiming the environment is dangerous, dirty and drug-ridden.
The report, carried out by the Chief Inspector of Prisons, claims drugs and alcohol are more readily available than cleaning materials.
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Derbyshire Constabulary has referred itself to the Independent Police Complaints Commission.
Cloudy and dry tonight. Brighter tomorrow.
Cloudy and humid overnight Some warm sunshine developing tomorrow.