Peaky Blinders season 5 will probably be the last, says Steven Knight

He also sees a big future for new series Taboo

Taboo co-creator Steven Knight has shed some light on the future of BBC gangster series Peaky Blinders.

The writer-director recently announced that scripts are complete for the upcoming fourth season with filming set to commence in March. In what was described as "a huge vote of confidence" from the BBC, a fifth series - starring Cillian Murphy and Helen McCrory - was commissioned simultaneously with a fourth, but Knight believes that could be as far as the gangster series will go.

Speaking to Radio Times, Knight said: "Never say never, but we feel that [series] five may be the last," he admitted.

"We don't know for sure. We will see how we feel about it. Peaky is one of those things everybody loves, and the response has been so magnificent on both sides of the Atlantic.

"I have got the end in my mind; whether that happens at the end of five is the question. I want it to end when the first air raid siren sounds in Birmingham."

He's expecting his current series Taboo - which he co-created alongside lead actor Tom Hardy and his father Chips - to run for a while longer on the channel also.

"We think it has got a two and a three certainly, that's the plan. After that, who knows? This series is eight parts - it's a lot of time."

Set in 1814, Taboo stars Hardy as James Delaney, an adventurer who uncovers a dark family conspiracy upon returning home from Africa with the aim of avenging his father's death. You can read our review of the latest episode here.