Ross Kemp Accidentally Doing Spice In New ITV Documentary Labelled TV Moment Of The Year

But viewers had quite a shock when they saw the former EastEnder lost for words after he accidentally inhaled spice from a prisoner's vape.

Ross, 55, was left unable to talk after he inhaled a small amount of the drug while visiting the South East London prison.

The new documentary sees the actor and presenter venture inside the prison - also referred to as 'Hellmarsh' - over a period of six months.

Belmarsh is famous for having housed the country's most notorious criminals including train robber Ronnie Biggs as well as Charles Bronson.

And viewers were so taken aback by some of the scenes that they took to Twitter to voice their views, with many claiming Ross doing spice was the "TV highlight of the year".

One viewer even called for an image of Ross' face while inhaling to be "put on a stamp [or] framed in the National Portrait Gallery".

"That picture of Ross Kemp inhaling spice should become a national icon," they wrote.

"Put it on a stamp. Frame it in the National Portrait Gallery [...] Stick it on T-shirts and tattoo designs. It's an image for the ages."

Others said it had "made their night" while another said it was worth the TV licence fee.

"TV doesn't get much better than Ross Kemp being high on spice," claimed another satisfied viewer.

One called it "gold" and said it was better than an infamous Ross moment when he was ambushed by three men in Papua New Guinea.

"Ross Kemp is absolutely box office mate this vid is almost as good as 'You gonna kill me!? No one's gonna' f***king kill me!'" They tweeted.

Ross, who only inhaled a tiny amount of the drug, explained he could feel it kicking in, before a huge grin appeared on his face.

Moments later, he was lost for words while trying to explain what it felt like.

"I can't even talk, that's how strong it is," he told cameras.

Speaking about the moment to The Sun, he said: "I am rarely lost for words but as I turn to camera, I have lost the ability to speak.

During the show, Ross investigates the impact drugs are having on prisons and the approach Belmarsh has taken to the rehabilitation of inmates.

Viewers were impressed with the documentary, the second part of which continues next Thursday, with one tweeting: "Great first viewing. Will be watching next week, great insight to what actually happens and how the staff deal with it."

Meanwhile, another viewer called it "incredible", tweeting: "Such an eye opener into what's happening nowadays behind closed doors.

"Keep up the great work. Look forward to watching next week."

The second episode of Welcome to HMP Belmarsh airs next Thursday, 16th January at 9pm on ITV.