The actor died of breast cancer and passed away aged 52 on 16 April, 2021.
McCrory, of course, featured as the queen of the Shelby clan in her role as Aunt Polly.
According to The Sun, a spokesperson said: "Helen did not film with us in series six but Polly is an ever-present part of the show.
"She is forever the matriarch of the Shelby family and her presence is always felt by Tommy and the rest of the family.
"Her influence is an integral part of the season."
Cillian Murphy (Thomas Shelby) also confirmed to The Guardian last month (Dec 12) that McCrory, sadly, won't be appearing in the new season.
"She would have been in series six if the pandemic hadn’t put everything on hold," he explained.
"We were just five days away from shooting in March 2020 when the lockdown was announced. Helen was the heart of that show and it was hard to make it without her. Really hard.
"There was this huge absence on the set. We all felt it. She died while we were shooting.
"She was too young. You can’t help but think of all the amazing roles she would have had."
Despite the tragic news, the show will go ahead and back in November, director Anthony Byrne surprised fans with a small teaser trailer on Instagram showing Tommy Shelby walking through the streets of Birmingham along with the caption: "We’re coming for you sooner than you think. By order of…"
And in December, the bombshell was dropped that Tom Hardy's character, Alfie Solomons, may indeed be making a comeback for the sixth season.
Many fans thought Hardy's character was killed off in season four, only for him to seemingly come back from the dead in the following instalment.
Not much was known about whether he would be included in the sixth and final season but last month, we were finally given that answer.
The 10-second clip that was teased on social media shows Tommy Shelby walking towards the camera before saying: "Alfie, I think I may have written your final act."
The camera then cuts to Solomon with a much fuller beard and standing tall with an ominous look in his face.
Seemingly not dead afterall, I suppose?
The sixth season of Peaky Blinders is expected to be released in early 2022.
Featured Image Credit: Alamy