Mr Selfridge creator Andrew Davies has revealed that the show will probably end after its fourth series.

Filming on the third series of ITV’s period drama began in April.

Davies told Digital Spy: “It was always conceived of as four series – that is, if people liked it enough. People seem to love it, so I think we can do the four series.”

Series 3 will pick up the story in 1919 just after the end of World War I, with new cast members including Zoë Wanamaker (My Family), Kara Tointon (EastEnders), Hannah Tointon (Hollyoaks) and Leon Ockenden (Waterloo Road).

The writer hinted that the new series will see Jeremy Piven’s character, Harry Selfridge, become “darker and wilder” following the death of his wife.

Davies teased: “He was just such a good boy all through the second series – I’d like him to cut loose in [Series 3]. [In real life] he became increasingly wild and reckless and finished up penniless – so it’s got a tragic arc at the end. I guess we’re going to stick to that.”

Series 3 will air on ITV in spring 2015.

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