One and half years after the second season of Blue Lights debuted, we now finally know when the hit police show will be back on our screens.

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The third season will officially debut as a boxset on BBC iPlayer on Monday 29th September, while the first episode will also air on BBC One at 9pm that day.

Earlier this year, Tommy Foster actor Nathan Braniff teased that the third season would be the "best so far", while Grace Ellis star Siân Brooke said: "The writing I think on this one, it just blows it out the water – I don't know how these guys get better and better, but they do."

She said of the show's characters: "There's a lot of care that's gone into making them and they're very individual and so people have related to them, they want to know what happens, where the story ends."

Siân Brooke and Martin McCann in Blue Lights, stood next to each other and wearing police uniforms.
Siân Brooke and Martin McCann in Blue Lights. BBC/Two Cities Television

While the first and second seasons of the show arrived just a year apart, this third one has seen a slightly longer turnaround time, partly because the series scored a double renewal for both a third and fourth season.

This meant that additional planning and coordination was required, so that the two season's stories could fit together and tell a broader narrative.

While all of the show's central stars will be back, they will also be joined by Dune: Prophecy's Cathy Tyson and Bad Sisters star Michael Smiley, as confirmed by the BBC.

The synopsis for season 3 says: "Two years into their jobs as response officers, Grace, Annie and Tommy are accustomed to life under the blue lights.

"But their work will take them into a sinister world hidden behind the veneer of middle-class life, the world of the accountants and lawyers who facilitate organised crime.

"The old political and criminal order has gone and a new global gang rule Belfast, bringing danger closer to home for our officers than ever before."

Blue Lights season 3 will arrive on BBC iPlayer and BBC One on Monday 29th September. seasons 1-2 are available to stream in full on BBC iPlayer.

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Authors

James HibbsDrama Writer

James Hibbs is a Drama Writer for Radio Times, covering programmes across both streaming platforms and linear channels. He previously worked in PR, first for a B2B agency and subsequently for international TV production company Fremantle. He possesses a BA in English and Theatre Studies and an NCTJ Level 5 Diploma in Journalism.

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