'Has she gone back to retrieve her knickers?' Anna Friel sends stunned viewers WILD with a VERY steamy romp in 'sex mad' drama Deep Water

It's the show that's being dubbed Britain's answer to Big Little Lies. 

And Anna Friel, 43, certainly gave viewers something to talk about as she enjoyed a saucy romp with a married man in the premiere episode of Deep Water on Wednesday night. 

The scene saw her character, Lisa Kallis, in the midst of a steamy liaison with Adam (played by Steve Toussaint) in a bathroom during a dinner party - only for her to cut the steamy act short after being spotted by a mystery person. 

Friel-ing frisky! Anna Friel, 43, certainly gave viewers something to talk about as she enjoyed a saucy romp with a married man in the premiere episode of Deep Water on Wednesday

Friel-ing frisky! Anna Friel, 43, certainly gave viewers something to talk about as she enjoyed a saucy romp with a married man in the premiere episode of Deep Water on Wednesday

After being spotted, Anna proved to be in such a hurry that she leaves her knickers on the floor while fleeing the bathroom. 

The scene prompted a huge response from fans who questioned how realistic the scenario was, while others expressed concern over her forgotten pair of knickers. 

They rushed to Twitter to express the following thoughts:   

'Nothing about this is remotely like anything in the real world that I live in.. Who would leave the bathroom door open? Who'd forget her knickers. Who'd be so easy seduced? Who'd be smiling as a boy is pulled out water after nearly drowning. I could go on #DeepWater'

Saucy: The scene saw her character, Lisa Kallis, in the midst of a steamy liaison with Adam (played by Steve Toussaint) in a bathroom during a dinner party

Saucy: The scene saw her character, Lisa Kallis, in the midst of a steamy liaison with Adam (played by Steve Toussaint) in a bathroom during a dinner party 

Things escalated incredible quickly after Adam surprised her after walking into the bathroom

Things escalated incredible quickly after Adam surprised her after walking into the bathroom

'Dropped her knickers quicker than the speed of light lol lol So who spotted them??The kid with the eye patch I reckon..!! #DeepWater.'

'Anna Friel you naughty girl #DeepWater.'

'Has she gone back to retrieve her knickers??#DeepWater,'

'How can you forget something as essential as your knickers?! #DeepWater.'

'They’re either frigid or sex mad in #deepwater.'   

ITV’s new six-part drama Deep Water is set in the stunningly imposing Lake District and is based on two of the books in author Paula Daly’s Windermere set of novels, 

Oh no! However, the steamy act was cut short after they were spotted by a mystery person

Oh no! However, the steamy act was cut short after they were spotted by a mystery person

Oops: Anna quickly fled the bathroom but appeared to forget her black lace thongs on the floor

Oops: Anna quickly fled the bathroom but appeared to forget her black lace thongs on the floor

'Sex mad': The scene prompted a huge response from fans who questioned how realistic the scenario was, while others expressed concern over her forgotten pair of knickers

'Sex mad': The scene prompted a huge response from fans who questioned how realistic the scenario was, while others expressed concern over her forgotten pair of knickers

The series explores the intertwining lives of three mothers with children around the same age, and for Anna – who has a 14-year-old daughter Gracie by Harry Potter actor David Thewlis – the drama hit close to home.

‘The last line of episode one is, “Just what kind of mother are you?”, and of course I found myself asking myself that very question,’ Anna recently told Daily Mail's Weekend Magazine.  

‘The answer is that, like most mums, I do my best but it’s not easy. Life, for most of us, is not tied up with a bow.

'While making Deep Water I thought I’d be getting back to Gracie at home in Windsor every other weekend – a six-and-a-half-hour commute from the Lake District – but during the entire four and a half months of the shoot I only got back there for a single week.

'Life goes so quickly and you run the risk of missing out on so much if you’re not around your children.’

New: ITV¿s new six-part drama Deep Water is set in the stunningly imposing Lake District and is based on two of the books in author Paula Daly¿s Windermere set of novels

New: ITV’s new six-part drama Deep Water is set in the stunningly imposing Lake District and is based on two of the books in author Paula Daly’s Windermere set of novels