Prison Service Instructions (PSIs)
There are a number of rules, regulations and guidelines by which prisons are run. These are outlined in Prison Service Instructions (PSIs).
All Prison Service operating instructions are published as PSIs. They have a fixed expiry date.
PSI Numerical Index 1997 - 2009 (PDF 0.55mb)
PSI and AI Numerical List 2009 onwards (PDF 0.23mb)
Subject Index (PDF 0.13mb)