EastEnders has revealed the release date of a flashback episode about the Mitchell family. This one-off episode, which airs on September 5, will feature Jaime Winstone as a young Peggy Mitchell, having previously played Dame Barbara Windsor in the TV biopic Babs. Phil Mitchell (Steve McFadden) will look back at a pivotal moment for his family as he faces more pressure from DCI Keeble on the grass in crime syndicates – and, through flashbacks, viewers will learn that Keeble’s grudge against the Mitchell family there is more than meets the eye. BBC Scenes set in 1979 will have the Mitchells on the brink of collapse as Peggy tries to save her marriage to her volatile husband Eric Mitchell (a villainous George Russo). Eric battles with his son Phil (We Are Lady Parts’ Daniel Delaney) over who is the man of the family, while Glenda (Poldark’s Rose Reynolds) tries to keep young Ronnie and Roxy out of the fray. Above all, the girls’ evil father Archie Mitchell (Poldark’s Henry Garrett) has one of his famous schemes in the works, and young Grant (Teddy Jay) finds himself in the middle of it all. This episode will be shown on BBC One and BBC iPlayer at 7.30pm on Monday 5 September. David M. BennettGetty Images Winstone previously said she was “such an honour” to play Peggy Mitchell, given her previous experience with Babs. “There’s definitely a healthy amount of pressure when you take on such an iconic role – I loved it,” she said. “Playing this role really solidified my love and admiration for Barbara as I booked my trip playing Peggy Mitchell – I hope I’ve done it justice. I loved every minute of it and can’t wait for you all to see the episode.” EastEnders airs Monday, Tuesday, Wednesday and Thursday at 7.30pm. on BBC One, with some episodes shown on BBC Two during summer sporting events. The show is also streaming on BBC iPlayer. Read more EastEnders spoilers on our exclusive homepage From Rags to Sid Owen’s Ricky Macmillan amazon.co.uk £6.21 One of them: From Albert Square to Parliament Square by Michael Cashman £49.21 The End of an Earring by Pam St Clement In Nick of Time by John Altman John Blake Publishing Hive £12.35 A Bit of Me by Denise van Outen £15.45 EastEnders: Christmas Specials collection The World According to Danny Dyer: Life Lessons from the East End by Danny Dyer £9.15 EastEnders Collection – Iconic Exits Just a Mo: My Story by Laila Morse All of Me: My Extraordinary Life by Barbara Windsor Before the Dot Year by June Brown £6.99 Kat & Alfie: Redwater [DVD] There’s No Taste Like Home by John Partridge £7.58 EastEnders: Iconic Exits Collection – part 2 The best of EastEnders [DVD] [2018]