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.
Divers to fix East Devon pools
Underwater experts will grout tiles
Community group snubs South West Water grant
Their application for cash was successful
Westcountry sex offender gets 18 years
Robert Squires won't get parole until he's at least 92
Calls for MP to resign from city council
She has missed all her scheduled meetings since May
More of new Armada Way revamp revealed
"It will be marvellous when it is all done"
Exeter city councillor cleared after asylum hotel row
Alison Sheridan vindicated of any wrong-doing
