Mark Gettleson from the Howard League for Penal Reform said the Government's proposals to give ex-prisoners supervision in the community is "an admission that short-term prison sentences are failing".
He added that prisoners are currently "being warehoused in enormous overflowing prisons, rather than being given something useful to do on the outside."
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This report reveals a culture of collusion concealment and protection within a church that put its own reputation before abuse victims.
Sexual abuse by a bishop against young boys was hidden for years because the Church of England "colluded", Justin Welby has said.
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