In which prison was the TV character Norman Stanley Fletcher sentenced to serve five years?

Norman Stanley Fletcher, commonly nicknamed "Fletch", is the main fictional character in the BBC sitcom "Porridge", and the spin-off, "Going Straight". He was played by Ronnie Barker.

"Porridge" is a British sitcom, starring Ronnie Barker and Richard Beckinsale, written by Dick Clement and Ian La Frenais, and broadcast on BBC1 from 1974 to 1977. The programme ran for three series, and included two Christmas specials and a feature film of the same name.

The sitcom focuses on two prison inmates, Norman Fletcher (played by Barker) and Lennie Godber (played by Beckinsale), who are serving time at the fictional HMP Slade in Cumberland. The show's title is a reference to both the traditional breakfast that used to be served in British prisons, and a 1950s British slang term for a prison sentence.

"Porridge" was critically acclaimed and is widely considered to be one of the greatest British sitcoms of all time.

The BBC production team had planned to film "Porridge" in a real prison. However, before filming began the Home Office refused, so the BBC improvised. They used the main gatehouse of former St Albans Prison at Victoria Street, St Albans, Hertfordshire as the main gate of "Slade Prison".