SAS: Who Dares Wins in terrifying medical emergency during filming as TV’s toughest show returns

SAS: Who Dares Wins is thrown into chaos in an upcoming episode as one of the recruits collapses with a seizure.

The Special Forces training series kicked off tonight with a new location, new DS member, and 20 new recruits.

However, while the majority of the cast managed to make it through the first three days – with only one exit – it seems one cast member will be thrown into a medical emergency.

In a first look clip at upcoming episodes, recruits panic as while in their dorms, Aliyah (aka. No. 12) starts fitting while lying down in her bed.

The 26-year-old Londoner looks terrified as her eyes shoot open wide and her new co-recruits rush to help her.

As she starts convulsing, someone commands the filming team to "get an ambulance now".

The terrifying scenes will play out in later episodes.

Speaking ahead of the show airing, Aliyah hinted she would be going through some hardship, and said: "I don’t think I have a fear anymore to be honest, my experience was very unique physically and spiritually."

The influencer, who was born in South Africa, added she wasn't prepared for the heat of Vietnam and that became one of her biggest struggles on the show.

Aliyah is appearing on the series to raise awareness over miscarriages, after using her social media pages to document her two pregnancies and her losses both times at the six month mark.

She said she wanted to take on the course as "it will heal me in the most twisted of ways, and I want to get my spark back".

SAS: Who Dares Wins continues next Monday at 9pm on Channel 4.