Question: where is the new series of porridge filmed

title: Porridge (TV series)
text: The BBC was forced to look around for locations because the Home Office refused permission for any production filming inside or outside a real prison . Instead the main gatehouse of the disused St Albans Prison ( in the town 's Victoria Street ) was used in the opening credits . Exteriors were first filmed at a psychiatric hospital near Watford . However , after the completion of the second series , the hospital withdrew permission for more filming following complaints from patients ' families . Another institution near Ealing was then used for the third series . Scenes within cells and offices were filmed at the BBC 's London studios . But for shots of the wider prison interior , series production designer Tim Gleeson converted an old water tank , used at Ealing Studios for underwater filming , into a multi-storey set . 

Answer: answer: Instead the main gatehouse of the disused St Albans Prison ( in the town 's Victoria Street ) was used in the opening credits . Exteriors were first filmed at a psychiatric hospital near Watford . Another institution near Ealing was then used for the third series . Scenes within cells and offices were filmed at the BBC 's London studios .