The actor transformed into Tommy Shelby on set in Manchester, complete with signature sharp suit and overcoat, as he filmed scenes on a barge for the upcoming sixth season.
The 44-year-old was seen talking to a new character played by actress Amber, who also dressed in period costume with a tweed jacket and green sweater.
The pictures show Cillian wearing a pair of shades, which suggests the pair were rehearsing scenes before the cameras rolled.
Details of Amber’s character has yet to be confirmed, although she could be set for a big introduction in the upcoming sixth season.
The show’s director Anthony Byrne teased the arrival of a dangerous new female character in the new episodes.
‘There’s a great female character who is new, who is pretty dark,’ he told Digital Spy.
‘I haven’t seen a character like her in Peaky before. I won’t say who she is, but she certainly gives Tommy a run for his money.’
Amber, 29, is known for her roles in Emma., The Riot Club and Black Mirror.
Filming for season six hasn’t been without its problems. Peaky Blinders bosses recently came under fire over potential ‘Covid-19 breaches’ after a crew member had a false positive test recently.
Last week it emerged a spanner had been thrown into the production on season 6, which only began in January due to pandemic restrictions, after a crew member received a ‘false positive’ coronavirus test result.
A spokesperson for the BBC show said: ‘In line with protocol, this person took an NHS test and anyone who came into contact with them self-isolated – the safety of our team on Peaky Blinders is of paramount importance.’
In January, it was announced that Peaky Blinders would come to an end after the forthcoming sixth series. Creator and writer Steven said the story would continue in ‘another form’ and later hinted at a film.
Peaky Blinders is available to stream on BBC iPlayer on Netflix.
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