Blue Lights season 3 is set to release in autumn 2025, with the UK premiere on BBC One and BBC iPlayer on Monday 29 September 2025 at 9 pm.

Blue Lights season 3 release date

  • In the UK, Blue Lights season 3 premieres on BBC One on Monday 29 September 2025 at 9 pm , with the full box set available the same day on BBC iPlayer.
  • The season consists of six episodes , matching the length of seasons 1 and 2.
  • The BBC had previously indicated the show would return in autumn 2025 , which aligns with the confirmed late‑September launch.

International and streaming rollout

  • In the US and other regions where Blue Lights is carried by BritBox , season 3 is scheduled to premiere on 13 November 2025 , with new episodes dropping weekly until 18 December 2025.
  • Some forum and streaming discussions note weekly episode drops, with full‑season access depending on subscription tier or platform (for example, certain BritBox setups).

Quick facts

  • Platform (UK): BBC One broadcast, BBC iPlayer box set.
  • Platform (US/selected regions): BritBox, from 13 November 2025.
  • Number of episodes: 6.
  • Setting: Continues following Grace, Annie, and Tommy as they tackle more complex and more “middle‑class” organized crime in Belfast.

Information gathered from public forums or data available on the internet and portrayed here.