The jail was designed to hold 318 inmates but the Howard League for Penal Reform says at the end of January, there were 530.
The charity also says the overcrowding leads to more violence and self-harm among prisoners, and hampers their rehabilitation.
Students connect with elderly residents to combat loneliness
International students creating lasting friendships
Crackdown on anti-social behaviour in Plymouth
PSPOs proposed for six city centre car parks
£1.6 million for more energy efficiency Devon home upgrades
41 properties improved over last year
SWW to build huge new Churston solar farm
Council could opt out of building and lease the land instead
MP highlights Devon's dentistry 'crisis'
'People are in pain but are unable to access treatment'
Work on ‘once-in-a-generation’ Newton Abbot project back on track
'Newton Abbot is a fantastic place'
