Your TV guide for Thursday 17 September, 2026

Viewers are in for a packed lineup of primetime television tonight, ranging from cozy period drama and laugh-out-loud task antics to emotional family reunions and gripping detective mysteries.

Here is everything to tune into across terrestrial TV and streaming platforms tonight:

Ludwig

• Time & Channel: 9:00 p.m. on BBC One & BBC iPlayer
• Genre: Mystery / Comedy-Drama

John and Lucy find themselves stumped as they attempt to connect their latest revelation to the existing web of evidence. When a local sushi bar suddenly transforms into a murder scene, an unexpected witness steps forward to aid John’s dual investigations. Meanwhile, a restless Russell takes matters into his own hands to get answers—though his impulsive actions may yield troubling consequences.

Taskmaster

• Time & Channel: 9:00 p.m. on Channel 4 & All 4
• Genre: Comedy / Panel Game Show

Taskmaster Greg Davies and his sidekick Alex Horne return with another absurd battery of challenges for their latest celebrity cohort. Questions on tonight’s episode include whether Matt Lucas can overcome his vertigo, how Chloe Petts managed to track down a giant syringe, and why Alex Horne is flopping around dressed in flippers and butterfly wings. Elsewhere, Nina Conti attempts to stuff her face with citrus fruits, Isy Suttie leaves her saliva on Alex’s jacket, and Richard Ayoade hurls a doll’s head directly at a gargoyle.

Long Lost Family

• Time & Channel: 9:00 p.m. on ITV1 & ITVX
• Genre: Documentary / Reality

Davina McCall and Nicky Campbell host two emotionally charged reunion stories. At 77, Pat is searching for the son she placed for adoption when she was just 15 years old; after learning she was unable to have more children naturally, she hopes to tell her only son she has loved him her entire life. In the second case, Jake seeks to track down his long-lost siblings, Tom and Katie, whom he has missed since early childhood.

All Creatures Great and Small

• Time & Channel: 9:00 p.m. on Channel 5 & My5
• Genre: Period Drama

The beloved drama returns to 1946 Darrowby, where the end of World War II brings fresh challenges for Yorkshire vets James Herriot (Nicholas Ralph), Siegfried Farnon (Samuel West), and Tristan Farnon (Callum Woodhouse). A newly arrived vet in town threatens to disrupt the status quo, while James finds himself puzzled by a cat’s mysterious ailment. Meanwhile, Helen chooses to embrace the future over old traditions, and the community rallies together to help young Jimmy prepare for his first day of school.

Big Brother

• Time & Channel: 9:00 p.m. on ITV2 & ITVX
• Genre: Reality TV

The housemates face another round of high-stakes social dynamics, secret tasks, and impending nominations as the classic reality television experiment continues on ITV2.

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