Many prisoners refuse to leave their cells due to a tense, occasionally threatening atmosphere in the wings.

Roughly 85 prisoners additionally to sex offenders are held separately due to fears over their safety.

Conditions at Garth are not exceptional and other prisons are also problematic, a delegation from the European committee for the prevention of torture reported.

Programmes on offer include woodwork, motor mechanics, industrial cleaning and light engineering.

The prison also offers NVQs in horticulture and textiles, as well as electrical, mechanical and community workshops.