BritBox: best new shows streaming this week

Discover the best new shows to stream from 22 September to 28 September 2025 on BritBox with this guide.
This Way Up. Image: Channel 4.

BritBox: new this week

Penguins: Meet the Family (23 September)

Documentary. A unique celebration of one of Earth’s most iconic birds. For the first time, we meet the entire penguin family – all 18 species. This colourful cast of characters may seem familiar, but their incredible diversity won’t fail to surprise.

The King’s Guard: Serving the Crown (24 September)

The King's Guard Serving The Crown
The King’s Guard: Serving the Crown. Image: Channel 5. Streaming on BritBox.

Documentary Series. Get behind the scenes access to the elite regiments of the British Army’s Household Division, in one of the busiest years in its 350-year history. Known as the King’s Guard, the soldiers serve a dual role. Their sworn duty is to protect the Monarch and the State – as both a modern fighting force and masters of state ceremony and tradition.

This Way Up Seasons 1-2 (26 September)

Series. This new comedy is about moving on, moving forward and trying to find happiness. Aine is a whip smart English-as-a-foreign language (TEFL) teacher trying to pull her life back together after a ‘teeny little nervous breakdown.’ Her sister Shona worries not only about her younger sibling but also about her own life choices. Watch the trailer.

Starring Aisling Bea, Sharon Horgan, Tobias Menzies, Aasif Mandvi, Indira Varma, and Kadiff Kirwan.

BritBox: recently added

Grace Season 5 (18 September)

Series. This series delves into four new investigations that push Grace and his team into some of their most high stakes cases yet. From a chilling stadium threat that drags Grace into the dangerous underworld of organised crime, to a mysterious hotel death linked to a trail of digital deception, he must navigate the criminal landscape where nothing is as it seems while also still reeling from the emotional fallout of Sandy’s death. Watch the trailer.

Starring John Simm, Richie Campbell, Zoë Tapper, Brad Morrison, and Laura Elphinstone.

Downton Abbey Seasons 1-6 (12 September)

Downton Abbey. Image: Pbs. Streaming On Britbox.
Downton Abbey. Image: ITV. Streaming on BritBox.

Series. This iconic period drama follows the lives of the Crawley family and the servants who worked for them at the turn of the 20th century in an Edwardian English country house. Lord Robert Crawley, Earl of Grantham sees his family heritage, especially the grand country home Downton Abbey, as his mission in life. The death of his heir aboard R.M.S. Titanic means distant cousin Matthew Crawley is suddenly next in line and is moving onto the vast estate with his even more modernist, socially engaged mother.

Starring Hugh Bonneville, Michelle Dockery, Dan Stevens, Maggie Smith, Laura Carmichael, and Jim Carter.

Dinosaur Apocalypse (10 September)

Documentary. Explore an incredible discovery in a prehistoric graveyard of fossilised creatures that are astonishingly well preserved and could help change our understanding of the last days of the dinosaurs. Evidence from the site provides insights into the day when an asteroid bigger than Mount Everest devastated the planet and caused the extinction of the dinosaurs. Based on brand new evidence, witness the catastrophic events of that day play out minute by minute.

Starring David Attenborough, Phillip Manning, and Robert DePalma.

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Leah J. Williams is an award-winning entertainment and technology journalist who spends her time falling in love with media of all qualities. One of her favourite films is The Mummy (2017), and one of her favourite games is The Urbz for Nintendo DS. Take this information as you will.