ONE of telly’s steamiest show’s EVER is set to hit UK screens for free for the first time.

Crammed full of racy romps and BDSM scenes, Brit actors Ruth Wilson and Dominic West take the lead in .

A woman pressed against a wall, eyes closed and mouth open in ecstasy, with a man's bare back and arm visible behind her, his face against her hair.One of telly’s steamiest show’s ever is set to hit screens in the UK for the first timeCredit: Showtime Networks Two people, a man and a woman, in water, looking in opposite directions, with "THE AFFAIR" and "SHOWTIME" text.The hit Showtime series stars Ruth Wilson and Dominic West as cheating spouses

Now, the first three series of the Showtime sizzler – which explores the emotional and psychological impact of extra marital relationships – will be available to stream on X from March 13.

While season four – – is set to arrive in summer, the final instalment will not be available for fans to binge until 2027.

Protagonists Noah, played by , and Alison, taken on by Ruth, start a hugely-passionate affair in season one.

With the tantalising scenes previously scooping a for Best Television Series – Drama, we take a look at some of the most X-Rated.

FIRST THRUST

The lead characters’ insatiable attraction builds during the opening episodes of season one and reaches the peak in the fourth instalment.

The pair finally consummate their affair after a dizzying build-up of animal attraction, after Noah meets waitress Alison at a restaurant while vacationing with his family.

The fourth episode captures the pair’s cinch on Block Island where Noah sexily demands “Look at me” as they roll around on the sheets.

As Noah reaches his climax, he grabs Alison and repositions her against a wall, as the two writhe in pleasure.

A man and a woman in bed, engaged in a steamy scene.Noah and Alison consummate their affair in episode four, after a sizzling build up of attractionCredit: Showtime Networks A woman with brown hair and an open mouth is shown in a steamy scene.Things heat up in the next episode when Noah performs a sex act on AlisonCredit: Showtime Networks

ATTENTION ON ALISON

After the pair do the dirty for the first time, there is no stopping them.

The next episode, episode 5, sees Noah performing a sex act on the waitress as he goes down on her in the bedroom.

The camera is focused on the topless English Rose actress as she moans and grabs the sheets while Noah is put to work.

REVENGE SEX

Nude man standing at a window while a woman is in bed with a blanket.A full frontal nude scene dominates the first episode of the second instalmentCredit: Showtime Networks

Noah and Alison’s affair is exposed in a gripping season one finale and the second season sees the plot shifts to their former partners Helen (ER’s Maura Tierney) and Cole (Dawson’s Creek star Joshua Jackson).

An intimate scene in the season 2 premiere captured Helen – Noah’s wife – and her secret new partner Max hit the bedroom for a very sexy hook-up.

Max is Noah’s old college pal, and the revengeful tryst comes when Noah and Helen are in the middle of their divorce.

In the scene, actor Josh Stamberg romps totally naked, before giving the audience a cheeky eyeful of his pert and peachy bottom post-coital.

ANGRY SEX

A shirtless man kisses a woman, lifting her leg, as she leans back on a counter with a bowl.While Noah and Alison enjoy some angry kitchen sex in episode 2Credit: Showtime Networks

Having split from their spouses, Noah and Alison are navigating life together – but it’s not all plain sailing.

In season 2, episode 2, Alison tells her new beau that she’s accepted as a new job as a personal assistant, to a woman whose husband is a high profile literary bug-wig.

Insecure author Noah can’t disguise his jealously and the two have a spat.

But as the anger builds, the two roughly kiss and make up with a saucy sex scene in their cottage kitchen.

Noah hitches Alison on top of a kitchen counter and thanks to their adrenaline surge from their argument, it’s not long till they reach the pinnacle.

POOL SEX

A man and woman kissing passionately in a pool, their faces wet.Alison and Noah get frisky in the pool of their new home – with someone else watchingCredit: Showtime Networks

After moving on from the jealously-fuelled passion, they later get frisky in the pool of their new home.

The pair have purchased a pad in Montauk with stunning outdoor space.

Yet the pool – and water – has been a key factor through the series after Alison’s son’s drowning.

In season 2, episode 3, She braved her fears and dived into the waters, with Noah in hot pursuit.

He whips off her bikini and they continue to romp, despite being watched by someone in the distance.

MARRIED MATE

A couple having sex in a bedroom.Alison’s husband Cole finds himself entangled with a married womanCredit: Showtime Networks NINTCHDBPICT001066001586His married lover greets him ready totally starkers ahead of their tussle in the sheetsCredit: Showtime Networks

There’s another full frontal nudity scene in episode 5 of season 2 involving Alison’s ex husband Cole, played by Joshua Jackson.

And as fate would have it, her jilted lover finds himself in bed romping with a married woman.

He swings by her house for some afternoon delight, greeted by his totally naked suitor.

She slams him on to the bed and the two are at it like rabbits, until they’re caught in the act.

Cole is dealt a punch from the woman’s husband as his just desserts.

BDSM BEDROOM SCENE

Two people embrace intimately in a dimly lit room.BDSM comes into play in the final season with Anna Paquin’s character JoanieCredit: Showtime

BDSM comes into play in this season 5 episode in a rough romp featuring True Blood star Anna Paquin.

She plays Cole Lockhart and Alison’s daughter Joanie, and now all grown-up, she’ and an’s having her own fun in the sheets with an unnamed bartender.

He pushes her against a bar and attempts to choke her, before she promptly slaps him in the face.

Their desire spirals to see him pin her on the bed, before the camera captures an overhead show of the action.