The sublime Peaky Blinders, magnificent Line of Duty and utterly daft Scandal are all back, while Kathyrn Thomas hosts Weather Live for the next three nights.

Pick of the day

Peaky Blinders, 9.00pm, BBC Two

Steven Knight’s acclaimed Birmingham saga about an early 20th Century gangster reaches new levels of intensity in its action-packed fourth season.

It’s December 1925 and Tommy Shelby OBE (Cillian Murphy) has acquired unprecedented legitimacy. The former gangster is also a man alone, estranged from his family and focussed only on business.

But when he receives a mysterious letter on Christmas Eve, Tommy realises that the Shelbys are in danger of annihilation.

Has Tommy Shelby finally met his match?

New or Returning Shows

Weather Live, 7.00pm, RTÉ One

The landmark show broadcasts from a live studio hub in the National Botanic Gardens, Dublin across three nights from Wednesday to Friday.

Presenter Kathyrn Thomas will be joined each night by a host of live studio guests and Met Éireann meteorologists, amongst them Gerald Fleming, Evelyn Cusack and Joanna Donnelly, to find out what makes the Irish climate so unique.

From Hurricane Ophelia to the Child of Prague, the show will sort fact from fiction and uncover how weather affects our everyday lives.

There will be live satellite links to studio with meteorologist Gerry Murphy and weather presenter Karina Buckley from some of the farthest flung corners of Ireland.

Scandal, 10.00pm, Sky Living

It’s the much-anticipated premiere of the seventh final season of Shonda Rhimes’ shouty and pretty daft political soap and, for all intents and purposes, Kerry Washington’s Olivia Pope is running the world.

One hundred days into Mellie’s presidency, Olivia is proving to be the power behind the throne, but she’s forced to make her toughest call yet in order to avoid an international incident.

Meanwhile, Olivia’s old position has now been filled by former associate Quinn Perkins, but she is struggling to fill the boots left by her former boss, having not had a single client since her departure.

The Secret Life of the Zoo, 8.00pm, Channel 4

What happens in the lives of the animals at Chester Zoo when no one's looking? Back for a new run, The Secret Life of the Zoo finds out, as special filming techniques reveal the private lives of animals.

Cameras take viewers inside the world of Chester's 15,000 animals, following their rites of passage, observing family dynamics within the animal groups, and seeing how love, old age, parenting, conflict, life and death play out in their lives.

Lifers Behind Bars, 9.00pm, Channel 4

Here’s the first half of a ground-breaking two-part documentary exploring what it's like to serve a long-term prison sentence in Britain, from the moment of sentencing through to the day of release.

Filmed over a year with unprecedented access to jails including HMP Shotts, Scotland's only prison exclusively for long-term offenders, the programme meets the men convicted of murder and serving mandatory life sentences.

Don't Miss

Line of Duty, 9.00pm, RTÉ2

Here’s season three of this superb cop drama from the BBC, which is easily one of the best television shows of the last decade.

This time around, Sergeant Danny Waldron (Daniel Mays) and his armed response team shoot dead a hardened criminal, but soon cracks appear in their story. What are they hiding?

When AC-12 - DS Steve Arnott  (Martin Compston), DC Kate Fleming (Vicky McClure) and Superintendent Ted Hastings (Adrian Dunbar) – get called in to investigate Waldron’s conduct, and even they might find themselves in the firing line this time.

Click here for our full TV Listings