<P> The theme music for the closing credits was written by Max Harris, who had also written the theme music for numerous other TV shows, including The Strange World of Gurney Slade and Doomwatch, and would go on to write the theme for Open All Hours, another of the Seven of One pilots . The cheery theme was "deliberately at variance with the dour comedy" and given a music hall feel by Harris because of the lead character's Cockney origins . </P> <P> Following the pilot episode broadcast on 1 April 1973, the sitcom ran for three series between 5 September 1974 (1974 - 09 - 05) and 25 March 1977 (1977 - 03 - 25), with 20 episodes in total . Each episode was 30 minutes except for the two Christmas specials in 1975 and 1976 . </P> <P> A sequel to Porridge, Going Straight, was aired between 24 February and 7 April 1978 . Beginning with Fletcher's release from prison on parole, it follows his attempts to "go straight" and readjust to a law - abiding life . Richard Beckinsale reprised his role as Godber, now the fiancé of Fletcher's daughter Ingrid (Patricia Brake), and the couple married in the final episode . Nicholas Lyndhurst also featured as Fletcher's gormless son, Raymond . The series lasted six episodes, and generally was not as well received as its predecessor, although it did win two BAFTAs, for Best Situation Comedy and Best Light Entertainment Performance (jointly with The Two Ronnies) for Ronnie Barker . </P> <P> On 29 December 2003, a mockumentary follow - up to Porridge was broadcast on BBC Two . It looked back on Fletcher's life and how the various inmates of Slade had fared 25 years after Fletcher's release from prison . Warren is now a sign painter, Lukewarm is married to Trevor, McLaren is an MSP, Grouty has become a celebrity gangster, Horrible Ives collects money for non-existent charities, Godber is now a lorry driver and still married to Ingrid, and Fletcher runs a pub with his childhood sweetheart, Gloria . </P>

Who played ronnie barker's daughter in porridge