BritBox: best new shows streaming March 2026

Discover the best new shows to stream on BritBox in March with this guide.
Michael Elwyn as Owen Thomas, Martin Clunes as Nathan Williams in Out There, streaming on BritBox in March. Image: Buffalo Pictures/All3Media International.

Motherland Seasons 1-3 – 4 March

Motherland. Streaming On Britbox In March.
Motherland. Image: BritBox.

Series. Anna Maxwell-Martin (Bleak House, Line Of Duty, South Riding) stars as Julia Johnstone, a working mum navigating a chaotic parent group and an absent husband, along with the trials of modern motherhood.

When her mother decides to stop helping out with the grandchildren, Julia is left with no choice but to take a more active role in her kids’ lives. She begins navigating the local parents group, meeting fellow working mum Liz, stay-at-home dad Kevin, and the confident, acerbic mum Amanda. Together, they navigate the trials, traumas and absurdity of modern parenting, forming an unexpected camaraderie.

Both brutally honest and utterly hilarious, Motherland is a critically-acclaimed, binge-worthy sitcom that delves into the unromantic and chaotic side of middle-class motherhood to deliver a hilariously honest and relatable portrayal of the hyper-competitive world of modern parenting.

8 Out of 10 Cats Does Countdown Seasons 7-8 – 10 March

Series. Comedian Jimmy Carr hosts this popular British comedy panel show crossover, which sees the cheeky and articulate format of 8 Out of 10 Cats tackle the mathematical challenges and word games of Countdown.

The show began as a series of specials, the first of which was broadcast as part of a special ‘mash-up night’ for Channel 4’s 30th anniversary celebrations in 2012, but the cross-over proved so popular that this led to the channel commissioning more and more seasons – and as of August 2024, 162 episodes of 8 Out of 10 Cats Does Countdown have aired.

Out There Season 1 – 10 March

Martin Clunes As Nathan Willaims In Out There. Image: Britbox/Buffalo Pictures/All3Media International.
Martin Clunes as Nathan Willaims in Out There. Image: BritBox / Buffalo Pictures / All3Media International.

Series. This compelling new drama stars Martin Clunes (Doc Martin, Men Behaving Badly, Reggie Perrin) as Nathan Williams, a Welsh farmer whose quiet life is turned upside down when urban gangs begin using the British countryside to move drugs and money.

Nathan is a widower struggling with grief while raising his teenage son on a family farm that has been passed down generations. As criminals encroach on his land, Nathan risks everything to defend his family, his land and his legacy in this tense, thrilling drama.

From the team that brought you Manhunt, this drama will keep you on the edge of your seat. Dubbed the ‘Breaking Bad of Wales’ by The Times, Out There will leave viewers hooked.

Her Majesty The Queen: Behind Closed Doors – 17 March

Her Majesty The Queen: Behind Closed Doors. Image: Britbox.
Her Majesty The Queen: Behind Closed Doors. Image: BritBox.

Documentary. Over the past decade, Queen Camilla has dedicated herself to raising awareness of domestic and sexual abuse, and this intimate 90-minute documentary takes an unprecedented deep dive into her advocacy work.

From hosting roundtables with teenagers to celebrating International Women’s Day at Buckingham Palace, the Queen meets survivors, campaigners and change makers, exploring the root causes of abuse and how to break its cycle. With candid reflections on what drives her advocacy, this documentary offers a rare glimpse into her private meetings and official engagements over the course of a year.

Death in Paradise Season 15 – 24 March

Shaquille Ali-Yebuah As Sebastian Rose In Death In Paradise S15. Image: Britbox.
Shaquille Ali-Yebuah as Sebastian Rose in Death In Paradise Season 15. Image: BritBox.

Series. As DI Mervin Wilson (Don Gilet) continues to adjust to life in Saint Marie, he and the police team must face numerous baffling cases. Whilst attempting to connect with his recently discovered half-brother Solomon (Daniel Ward), Mervin’s newfound familial happiness soon turns to frustration as he discovers the pair are not quite as similar as he hoped they might be.

Returning Commissioner Selwyn Patterson (Don Warrington) confronts the impact of his recent period of absence and, after some tough love from his old friend Catherine Bordey (Elizabeth Bourgine), he’s determined to win back the trust of the island. Meanwhile, Detective Sergeant Naomi Thomas (Shantol Jackson) and Officer Sebastian Rose (Shaquille Ali-Yebuah) help new recruit Sergeant Mattie Fletcher (Catherine Garton) settle into the fold, which might be easier said than done as shadows from her past begin to reveal themselves. With new plot twists and plenty of fresh faces, Season 15 is a must-watch.

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Alannah Sue is a writer, editor, theatre critic and content creator with a passion for arts and culture and all that glitters. She relocated to Melbourne in 2025 after spending over a decade embedded in the Sydney arts landscape and finishing up her tenure as Arts & Culture Editor at Time Out. In addition to contributing to ArtsHub and ScreenHub, her freelance portfolio also expands to editorial and copywriting for lifestyle and arts publications such as Limelight and Urban List, cultural institutions like the Sydney Opera House, and marketing and publicity services for independent artists. She is always keen to take a chance on weird performance art, theatre of all kinds, out-of-the-box exhibitions, queer venues, and cheap Prosecco. Give her half a chance, and she will get on a soapbox when it comes to topics like the magic of musical theatre, the importance of rigorous arts criticism, and the global cultural implications of the RuPaul’s Drag Race franchise. Connect with Alannah on Instagram: @alannurgh.