Mike Smith
In this blog, I explain how to watch all episodes of Blue Lights Season 4 from outside the UK and stream the new season online from anywhere in the world.
How to watch Blue Lights Season 4 outside the UK on BBC iPlayer
To watch Blue Lights Season 4 outside the UK, use a reliable VPN and connect to a UK server. Once connected, open BBC iPlayer, sign in to your account, and stream all six episodes online.
- Subscribe to NordVPN
- Install the VPN app on your device.
- Connect to a UK-based server.
- Open BBC iPlayer website, then login or sign up for a free account. A UK postal code is required when creating a new account, and you can use a UK postcode generator if needed.
- You are all set to watch Blue Lights Series 4 episodes online and from anywhere.
Blue Lights Season 4 Synopsis
Blue Lights Season 4 is a new season of the British crime drama series that follows Grace Ellis, Tommy Foster and Annie Conlon three years into their work as police response officers in Belfast. Created and written by Declan Lawn and Adam Patterson, the season stars Siân Brooke, Nathan Braniff, Katherine Devlin, Martin McCann and Andi Osho as the officers face growing pressure on the streets while the murder trial of Gerry Cliff uncovers a long-hidden secret connected to the police and Belfast’s criminal underworld.
Six months after the events of the previous season, Grace, Tommy and Annie are pushed to their limits as a new threat develops across the city. At the same time, the investigation involving Dana Morgan and Tina McIntyre, Gerry Cliff’s past and questions surrounding state collusion bring the officers closer to a truth that could have serious consequences for everyone involved.
When and What Time Does Blue Lights Season 4 Start?
Blue Lights Season 4 premieres on BBC One on Tuesday, September 29, 2026 at 9 p.m., with episodes airing weekly on Tuesdays. All six episodes are also available as a box set on BBC iPlayer from 6 a.m. on September 29, 2026.
Where to Watch Blue Lights Season 4 in the UK
You can watch Blue Lights Season 4 on BBC One in the UK, with new episodes airing Tuesdays at 9 p.m. from September 29, 2026. The entire six-episode season is also available to stream on BBC iPlayer.
Where to Watch Blue Lights Season 4 in Australia
Australian viewers can watch Blue Lights Season 4 for free on SBS On Demand from October 8, 2026. The new season will be available to stream through the SBS On Demand service without a paid streaming subscription.
Blue Lights Season 4 Episodes
Here are the six episodes in Blue Lights Season 4.
- Episode 1 – Eyes – Premiere date: September 29, 2026
Grace, Tommy, Annie and the section deal with rising tensions at a community event while the investigation into Dana Morgan’s drug operation with Tina McIntyre runs into trouble. - Episode 2 – Numbers – Premiere date: October 6, 2026
After the attack on Amira, Grace puts herself at risk as she searches for answers, while Mo’s situation becomes increasingly violent. - Episode 3 – Everybody Knows – Premiere date: October 13, 2026
Gerry’s murder trial begins as Mo’s worsening condition creates a conflict over justice, while Shane faces a tense confrontation with Lee. - Episode 4 – So Far – Premiere date: October 20, 2026
Sandra remembers a secret Gerry once shared with her and begins to understand how important the information could be. - Episode 5 – Ghosts – Premiere date: October 27, 2026
Sandra seeks help to reveal Gerry’s secrets as Tommy and Shane move closer to uncovering the drug pipeline. - Episode 6 – The Line – Premiere date: November 3, 2026
The aftermath of the explosion at Katie’s house leaves a life at risk as Gerry’s evidence about state collusion is released and the section tries to bring Morgan’s operation to an end.
Blue Lights Season 4 Cast
Here are the main cast members in Blue Lights Season 4.
- Siân Brooke as Grace Ellis
- Martin McCann as Stevie Neil
- Katherine Devlin as Annie Conlon
- Nathan Braniff as Tommy Foster
- Andi Osho as Sandra Cliff
- Joanne Crawford as Chief Inspector Helen McNally
- Frank Blake as Shane Bradley
- Abigail McGibbon as Tina McIntyre
- Dearbháile McKinney as Aisling Byrne
- Neil Keery as Sergeant Lawrence McCloskey
- Andrea Irvine as Chief Superintendent Nicola Robinson
- Cathy Tyson as Dana Morgan
- Hannah McClean as Jen Robinson
- Jonathan Harden as Jonty Johnston
- Michael Smiley as Paul “Colly” Collins
- Richard Dormer as Gerry Cliff
Can You Watch Blue Lights Season 4 Online for Free?
Yes. Blue Lights Season 4 is available to watch for free on BBC iPlayer, with all six episodes available from September 29, 2026. BBC iPlayer does not require a separate streaming subscription, but viewers need a valid TV Licence to use the service.
Is Blue Lights Series Suitable for All Ages?
No. Blue Lights is rated 15 in the UK and is not suitable for young children. The crime drama contains violence, strong language, drug-related storylines and mature themes, making it best suited to older teenagers and adults.
Where Can I Download Blue Lights Season 4 Episodes?
You can legally download Blue Lights Season 4 episodes through the BBC iPlayer app on supported mobile devices. Open the episode you want in the app and select the available download option to save it to your device. Once downloaded, you can watch the episode offline through BBC iPlayer while the download remains available.
On What Devices Can You Watch Blue Lights Season 4 on BBC iPlayer?
You can watch Blue Lights Season 4 through BBC iPlayer on a wide range of supported phones, tablets, computers, smart TVs and streaming devices.
| Category | Devices |
|---|---|
| Smartphones | iPhone, Android phones |
| Tablets | iPad, Android tablets, Amazon Fire tablets |
| Computers | Windows PCs, Macs, Chromebooks |
| Smart TVs | Samsung Smart TVs, LG Smart TVs, Sony TVs, Panasonic TVs and other supported smart TVs |
| Streaming Devices | Amazon Fire TV, Apple TV, Roku, Chromecast |
| TV Platforms | Sky Q, Sky Glass, Sky Stream, Freely, YouView |
| Web Browsers | Chrome, Safari, Firefox, Microsoft Edge |
Is Blue Lights Season 4 on BritBox?
The first three seasons of Blue Lights are currently available to stream on BritBox in the US and Canada. Season 4 will stream on BritBox following the same international release pattern as Season 3.
FAQs
Who created Blue Lights?
Blue Lights was created by Declan Lawn and Adam Patterson.
Who wrote Blue Lights Season 4?
Declan Lawn and Adam Patterson wrote Blue Lights Season 4.
Who directs Blue Lights Season 4?
Angela Griffin directs Episodes 1 to 3, while Sam O’Mahony directs Episodes 4 to 6 of Blue Lights Season 4.
Who produces Blue Lights Season 4?
Brendan Mullin is the producer of Blue Lights Season 4.
Who plays Grace Ellis in Blue Lights?
Siân Brooke plays Grace Ellis in Blue Lights. Brooke is also known for her television work in Sherlock, Trying, Doctor Foster and House of the Dragon.
Does Richard Dormer return in Blue Lights Season 4?
Yes, Richard Dormer returns as Gerry Cliff in Blue Lights Season 4 for a special appearance.
What genre is Blue Lights?
Blue Lights is a British police crime drama series set in Belfast, Northern Ireland.
How many episodes are in Blue Lights Season 4?
Blue Lights Season 4 has six episodes.
Where is Blue Lights filmed?
Blue Lights is filmed in and around Belfast, Northern Ireland, where the story is also set.
Trailer
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