Release time
On the day of your release, you will most likely leave prison before 8.45am.
If your release date falls on a Saturday or Sunday, you will leave on the Friday
before.
If your release date falls on a Bank Holiday, you will leave on the last working day
before the Bank Holiday. This will usually be a Friday.
If you are getting out on parole and your release date falls on a weekend then you
will get out on a Monday. If it falls on a Bank Holiday, you will usually get out after
the Bank Holiday. This will usually be a Tuesday.
http://www.prisonreformtrust.org.uk/uploads/documents/Offender%20management,%20sentence%20planning%20and%20getting%20ready%20for%20release.pdf