'Porridge' is returning with a new pilot.

'Porridge' star Ronnie Barker

'Porridge' star Ronnie Barker

The hit prison sitcom's writers Dick Clement, 77, and Ian La Frenais, 79, have revealed they're working on a new storyline that will feature the grandson of original character Fletcher, who was famously played by the late Ronnie Barker.

La Frenais told the Sunday Times newspaper: "He's called Fletch too and is a chip off the old block. He has what I'd call attitude.

"It will be set in a modern prison, while HMP Slade was, of course, Victorian. We were asked by the BBC to do a revival and decided to set it right up to date."

Fletcher's grandson will end up behind bars for computer hacking and will share a cell with an older inmate.

The original series saw Barker's character share a cell with Lennie Godber - who was played by actress Kate Beckinsale's father Richard Beckinsale - and clash with prison warder Mr. Mackay (Fulton Mackay) while using his somewhat friendly relationship with guard Mr. Barrowclough (Brian Wilde) to his advantage.

Barker also voiced the judge who announced his sentence at the beginning of every episode because a theme tune was seen as inappropriate for a prison show.

The new 'Porridge' will be a one-off but if it is successful it could return for a whole new series.

Casting is set to get underway imminently while the episode is set to air in spring or early summer next year.