Mr Selfridge has been renewed for a fourth season by ITV.
The Jeremy Piven-starring show will return for ten new episodes in 2016.
ITV's Director of Drama, Steve November, said: "We're delighted to commission a fourth series of Mr Selfridge.
"It's so pleasing to see the audience take the characters and storylines into their hearts. We're looking forward to seeing Jeremy reprise his role as the visionary yet deeply troubled Harry alongside simply stunning production values."
As well as Piven reprising his role as Harry Selfridge, Katherine Kelly, Ron Cook, Tom Goodman-Hill, Amanda Abbington, Sacha Parkinson, Amy Beth Hayes, Trystan Gravelle and Samuel West will also be returning.
The show's executive producer Kate Lewis has said that Harry Selfridge "loses his grip on his empire" in the forthcoming fourth series.