Will there be a fourth season of ‘Grantchester’?

Grantchester star Robson Green says that a decision on the detective show’s future will depend on its viewing figures.

A third season of ITV’s hit period drama aired earlier this year, but fans are still waiting to hear if the show will return for a fourth run.

Green plays police officer Geordie Keating, alongside Happy Valley star James Norton as vicar Sidney Chambers.

The actor told the Express: “It’s always down to viewing figures, it really is sadly. It is a secure entity now and it’s up there with the best of what ITV’s got to offer at the moment.”

However, while Green was hopeful that Grantchester will continue, he wasn’t so sure about his own involvement: “[It can continue] as long as you have quality writing. But yeah, if [writer] Daisy Coulam’s involved and you have the same production team and hopefully the same cast – they’re interchangeable [but] you couldn’t play a character forever, that kind of undermines the whole point of being an actor – but yeah, the series can carry on most definitely.

“Whether I’m in it or James [Norton] is in it or whoever is another question.”

The third season of Grantchester is available now to buy on DVD.

Based on James Runcie’s novels, Grantchester is set in the 1950s in the Cambridgeshire village of Grantchester and was first broadcast in 2014.