Tuesday 21 October 2025 – UK TV Guide: What's on TV today?
21.10.2025 03:00 • News
On this Tuesday evening, television offers an eclectic mix of programming that caters to a wide array of tastes. Viewers can indulge in gripping real-life dramas, thought-provoking quizzes, and tantalising reality shows that keep the drama at a simmer. BBC One’s 'Ambulance' takes a deep dive into the lives of paramedics, revealing both the harrowing and heroic moments that unfold on the front line of emergency care. Meanwhile, ITV 1's 'TikTok: Murder Gone Viral' explores the dark side of social media, juxtaposing the allure of viral fame with chilling real-life consequences.
As the clock strikes nine, BBC Two brings back the popular quiz show 'QI XL', where host Sandi Toksvig leads a round of amusingly perplexing questions that challenge contestants and viewers alike. Over on Channel 4, 'Worlds Apart' offers a unique perspective on societal divides, blending poignant storytelling with engaging visuals. Alternatively, for those drawn to the drama of fiction, Channel 5's 'Murder Before Evensong' presents a thrilling narrative steeped in suspense and intrigue. With the evening winding down, ITV 3’s 'Lewis' delivers a classic detective story, rich with character and atmospheric settings, while E4’s 'Married at First Sight UK' continues to explore the complexities of love and relationships through its unique social experiment. And for fans of reality television, ITV 2's 'Big Brother' provides an unfiltered glimpse into the lives of its housemates.
Tonight’s highlights (21:00–23:00)
BBC One — 21:00 — Ambulance: In 'Ambulance', real-life paramedics navigate the pressures of emergency responses, showcasing the emotional and physical toll of their vital work. The rawness of these encounters leaves viewers reflecting on life's fragility.
ITV 1 — 21:00 — TikTok: Murder Gone Viral: 'TikTok: Murder Gone Viral' delves into the intertwining worlds of social media and crime, examining how the internet's allure can turn sinister. A chilling exploration of modern fame, this documentary offers both intrigue and caution.
BBC Two — 21:00 — QI XL: The latest episode of 'QI XL' invites viewers to unravel bizarre facts and curious trivia. With Sandi Toksvig's wit steering the ship, prepare for a blend of humour and enlightenment that challenges what you thought you knew.
CHANNEL 4 — 21:15 — Worlds Apart: In 'Worlds Apart', the stark contrasts of modern society are laid bare. This thought-provoking series examines differing lifestyles and perspectives, encouraging viewers to ponder the divides that shape our world.
CHANNEL 5 — 21:00 — Murder Before Evensong: 'Murder Before Evensong' presents an enthralling narrative woven with suspense and rich characterisation. As secrets unfold, viewers are drawn into a web of intrigue that keeps them guessing until the very end.
ITV 3 — 22:00 — Lewis: The cerebral crime-solving of 'Lewis' returns with its trademark blend of wit and mystery. Set against the picturesque backdrop of Oxford, the show continues to engage with complex cases and even more complex characters.
E4 — 21:00 — Married at First Sight UK: 'Married at First Sight UK' dives into the intense emotions and challenges of couples embarking on a unique journey. Each twist and turn reveals the intricacies of love, trust, and compatibility in a fresh light.
ITV 2 — 21:00 — Big Brother: 'Big Brother' invites audiences into a world of social dynamics and personal drama, as housemates navigate their relationships under the watchful eye of the cameras. Expect revelations and unexpected alliances in this captivating reality show.
