- Part of
- Production company
- Theme tune composed by Max Harris. Introductory sentencing performed by Ronnie Barker.
- Laugh track
- Live studio audience
Pilot episode filmed on location in Wales.
The front gate is of the Main Gate House, of former St Albans Prison, Victoria Street, St Albans, Hertfordshire.
The communal areas of the prison were filmed in a water tank at Ealing Studios.
External scenes were filmed at various London psychiatric hospitals.
Most of the other interior scenes, such as Fletcher's cell, were filmed at BBC Television Centre.
- First broadcast
- Sunday 1st April 1973 on BBC Two at 8:15pm
- Last new broadcast
- Friday 25th March 1977 on BBC One at 8:30pm
- Upcoming repeats
- Series 2 Episode 7: Tomorrow at 8:35pm on Gold
- Series 2 Episode 7: Saturday 17th December at 11:10pm on BBC2
- Series 2 Episode 7: Monday 19th December at 7pm on Drama
- The Desperate Hours Episode 1: Tuesday 20th December at 7pm on Drama
- The Desperate Hours Episode 1: Thursday 22nd December at 9pm on Gold
- The Desperate Hours Episode 1: Friday 23rd December at 5:15pm on BBC2
- The Desperate Hours Episode 1: Friday 23rd December at 5:55pm on Gold