What's on? 10 top TV and streaming tips for Sunday

There’s a new six-part documentary about people who live or work around The Liffey, the return of Das Boot and SWAT, and the finales of Idris Elba's Fight School and SAS: Who Dares Wins . . .

Pick of the Day

The Liffey, 7.30pm, RTÉ One

This documentary series promises to be an intimate portrait of a river and the people it meets on its way to the sea.

The six-parter captures the lives and stories of a diverse group of people who are unified by the river Liffey, and is written by Joseph O’ Connor and narrated by Angeline Ball.

For some, the Liffey is a workplace, for many it’s a playground but for others it has defined and inspired their lives. There are artists and engineers, kayakers and dockers, swimmers and boat builders, the Navy and the Fire Brigade.

Rising in an anonymous bog in the Wicklow Mountains, the Liffey traverses Kildare before becoming the heart and soul of Dublin. This documentary series goes on a journey with a river brimming with history and overflowing with stories.

The opening episode focuses on protection and defence and we see the work of Dublin Fire Brigade and the Irish Navy.

Don’t Miss

Ordinary Love, 10.00pm, BBC Two

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Lisa Barros D'Sa and Glenn Leyburn's critically acclaimed drama is based on a script by playwright Owen McCafferty, and stars Lesley Manville, Liam Neeson and Esh Alladi.

When loving wife Joan (Manville) feels a lump in her breast, she and husband Tom (Neeson) attempt to navigate the world of serious illness, including the surgery, radiation and chemotherapy.

New or Returning Shows

Das Boot, 9.00pm, Sky Atlantic

Streaming on NOW

The award-winning German drama returns, following the tense struggles of a U-boat crew as they engage in the Battle of the Atlantic whilst being hunted down by a Royal Navy Commander.

They are sent on a dangerous mission to the Southern Hemisphere under the command of Robert Ehrenberg who finds redemption and the family bonds he thought he’d lost forever.

Meanwhile in neutral Lisbon, where exiles, spies and criminals rub shoulders with allies and enemies alike, Hagen Forster discovers a plot to steal plundered gold.

This discovery and experiences on the Eastern front lead him to question his actions and moral path and lead him to a shadowy figure caught in a conspiracy that might change the course of the War.

SWAT, 9.00pm, Sky Max

Streaming on NOW

Former marine and locally born and raised SWAT sergeant, Daniel "Hondo" Harrelson (Shemar Moore) is back as the last stop in law enforcement in Los Angeles.

Torn between loyalty to where he was raised and allegiance to his brothers in blue, he strives to bridge the divide between his two worlds and acclimate to his new duties as the legal guardian of a teenager.

As the fifth season opens, Hondo is reeling from the aftermath of his decision to speak out to the press and relocates to a quiet town in Mexico to reassess his life and professional future, only to find himself reluctantly drawn into one local family's fight for justice.

NCIS: LA, 10.00pm, Sky Max

Streaming on Now

We’re back in the high-stakes world of the NCIS: Los Angeles division, charged with apprehending dangerous, elusive criminals and threats to the USA’s security.

While Callen suspects Hetty of keeping secrets about his past and Joelle surfaces in her quest to capture Katya, NCIS must track down an informant whose life is in danger.

Also, Kensi and Deeks work to expand their family.

New to Stream

The Survivor, Sky Cinema & NOW

Directed by Barry Levinson and based on a true story, this drama stars Ben Foster as Harry Haft, who gets sent to Auschwitz concentration camp.

There he survives not only the unspeakable horrors of the camp, but the gladiatorial boxing spectacle he is forced to perform with fellow prisoners for the amusement of his captors.

Unknown to those who try to destroy him, Haft’s will to survive is driven by his quest to reunite with the woman he loves.

Ending Today

SAS: Who Dares Wins, 9.00pm, Channel 4

In the finale, two teams of recruits are captured by the hunter force and subjected to a variety of punishing interrogation techniques by a specialist team.

They endure being buried alive and thrown in water tanks, to force a confession, and struggle to maintain the cover story they are using to hide their true mission.

Idris Elba's Fight School, 9.00pm, BBC Two

Here’s when Idris Elba finally reveals to his team who they'll be facing in their official amateur fights.

As the big night draws closer, he arranges a training session with ex-convict turned world-record-breaking rower John McAvoy, who inspires with his own heroic story.

Back at Fight School, coach Greg discovers there's been a massive drop in student fitness and the intensity of the training puts a serious toll on some of the group, putting a number of their places in jeopardy.

Sunday Cinema

Official Secrets, 9.30pm, RTÉ One

This fact-based drama starring Keira Knightley and Matt Smith is about the publication of a leaked GCHQ memo in the run-up to the Iraq war.

The film reveals the devastating consequences for whistleblower Katharine Gun, who was put on trial for breaching the UK’s Official Secrets Act, and the journalists who were determined to unmask a conspiracy.

On the Town, 1.30pm, BBC Two

One of the great MGM musicals, this particular gem stars Gene Kelly, Frank Sinatra and Jules Munshin.

They play three wide-eyed sailors who are out for a good time while on a day's shore leave in post-WWII New York. It’s worth watching just for the iconic opening scene.

As the singing and dancing trio advance through the Big Apple, one sailor tries initially to fend off the advances of a female taxi driver, another is pulled into helping with an anthropologist's study of prehistoric man.

Meanwhile the third seeks out the face behind a famous advertising campaign - but finds that she's not quite what he expected.