It's been a while since we've had a really good thrilling legal drama to sink our teeth into, but thankfully Sienna Miller and the team at HBO and Sky are finally answering our prayers with new series War.

Also starring The Crown's Dominic West, War is all about two rival London legal firms who are battling head to head in the divorce case of the century. You can expect double crossing, betrayal and plenty of scandal.

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Curious to know more? This is everything to know about HBO and Sky's War.

What is War about?

From the creator of Hijack George Kay, War is a brand new legal drama about two rival legal firms in London.

The series opens with a "scandalous divorce case that sends shockwaves through boardrooms, bedrooms and courtrooms alike." And it will then "follow two of London’s most prestigious rival firms — Cathcarts and Taylor & Byrne — as they go head-to-head in the divorce case of the century. Each side is certain they’ll win. But as the case spirals and loyalties fracture, reputations are on the line, and everyone’s playing to win," according to the series' official synopsis.

Oh, and this is just the beginning, as the series has already been renewed for a second season, with the first expected to be "the first in an anthology of headline-making legal battles.”

Who is in the cast for War?

Leading the cast of War, is Dominic West as tech titan Morgan Henderson and starring alongside him as his estranged wife and actress Carla Duval is Sienna Miller.

Also starring in the series are Phoebe Fox and James McArdle as Serena Byrne and Nicholas Taylor, who are partners in life and work as the leads of legal firm Taylor & Byrne.

And then the rival firm Cathcarts will be lead by 'Her Majesty' Beatrice 'Queen Bea' Ubosi (played by Nina Sosanya) and St. John Smallwood (played by Pip Torrens).

We'll also meet an ambitious lawyer by the name of Jonathan 'Johnny' Warren, who will be played by Archie Renaux.

When can we expect War on our screens?

The HBO and Sky production will air on Sky and NOW here in the UK, but right now we don't have an exact air date from Sky as to when the show will air in the UK.

So far all the channel has said is the series is in "production soon", so given it still hasn't been filmed we reckon we won't be seeing it for at least a year.

Just enough time to brush up on our knowledge of legal jargon.