Blue Lights series 4 official trailer and artwork released

The BAFTA and RTS award-winning drama returns to BBC iPlayer and BBC One in autumn 2026

Published: 12:05 pm, 28 August 2026

The official trailer and artwork for the fourth series of the multi-award-winning Blue Lights, which returns to BBC iPlayer and BBC One this autumn, has been released.

Three years into their jobs as response officers, Constables Grace Ellis, Tommy Foster, and Annie Conlon are operating at their limit, facing a new threat on the streets that the police can barely control.

Meanwhile, the murder trial of Gerry Cliff exposes a dangerous and long-buried secret that leads to chaos both inside the police and across the criminal underworld. As they grapple with big decisions about their future, Grace, Tommy and Annie must find the courage to face the greatest threat they have ever encountered: the truth.

Produced by Two Cities Television and co-produced by Gallagher Films for BBC iPlayer and BBC One, the multi-award winning show stars Siân Brooke (Sherlock, Trying) as Grace Ellis, Martin McCann (Trespasses, Hostage) as Stevie Neil, Katherine Devlin (The Day Of The Jackal, Vikings) as Annie Conlon, Nathan Braniff (Blue Lights S1-4) as Tommy Foster, Joanne Crawford (Outlander: Blood of my Blood) as Chief Inspector Helen McNally, Andi Osho (The Sandman, I May Destroy You) as Sandra Cliff, Frank Blake (Say Nothing, Normal People) as Shane Bradley, Abigail McGibbon, (Ballywalter, The Power of Partner), as Tina McIntyre, Dearbháile McKinney (Blue Lights S1-4) as Aisling Byrne, Neil Keery (How To Get To Heaven From Belfast) as Sergeant Lawrence McCloskey and Andrea Irvine (Call The Midwife) as Chief Superintendent Nicola Robinson.

The series also sees the return of Richard Dormer (The Day of the Jackal, Game of Thrones) as Gerry Cliff in a special one off episode, Cathy Tyson (Dune: Prophecy, Black Ops) who plays private members club owner, Dana Morgan, Hannah McClean (Malpractice) as solicitor, Jen Robinson, Jonathan Harden (The Rainmaker, Time) as Inspector ‘Jonty’ Johnston and Michael Smiley (Bad Sisters, Censor) as C3 intelligence officer Paul ‘Colly’ Collins.

The 6 x 60’ series, for BBC iPlayer and BBC One, is co-created, written, and executive produced by Declan Lawn and Adam Patterson, co-created and produced by Stephen Wright, Two Cities Television, and co-created and co-produced by Louise Gallagher, Gallagher Films, with support from Northern Ireland Screen. The producer for series four is Brendan Mullin (In Flight, Wreck S2), episodes 1-3 are directed by Angela Griffin (Blue Lights S3, Waterloo Road) and episodes 4-6 are directed by Sam O’Mahony (The Wise Guy).

The series was commissioned by Lindsay Salt, Director of BBC Drama. The executive producers are Stephen Wright (Two Cities Television), Louise Gallagher (Gallagher Films), Declan Lawn and Adam Patterson, and the executive producer for the BBC is Nick Lambon.

BBC Studios is handling global sales for series four, in addition to all previous series. Blue Lights has been sold in over 160 territories. Two Cities Television is part of the STV Studios family of production labels.

UM

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