SAS Australia quickly became a fan favourite after the reality show put celebrities against their biggest fears and tested their physical and mental abilities.

The winners of SAS Australia were finally declared after an intensive physical challenge and interrogations. The three that made it to the end are former rugby player Nick Cummins, Australian comedian Merrick Watts and AFLW player Sabrina Frederick.

The three celebrities made it through weeks of rigorous tasks that involved physical injuries, mental torture and ice cold water.

Merrick was delighted for the show to finish.

"To pass it and to get through it and survive it is one of the greatest achievements I've ever had in my entire career."

"I did this course to rebuild my own confidence and to show myself my own capabilities but I ended wanting to learn more about the soldiers that sacrifice what they do and how hard it is for them to give over so much of their lives for us."

Sabrina Frederick said that she has so much respect for the SAS after completing the show.

"I have so much respect for the SAS to embark on this and to pass selection. For them to embrace me as one of their own, I will never be able to explain how much that means to me."

Merrick revealed just what he did after being declared one of the winners of the show.

"We went straight to Maccas and had a massive thickshake. That was definitely the first thing we did when we left," he said to Now To Love.

However, the show has left its mark on Merrick, three months on.

"I still have some niggling injuries. I had two fractured ribs and impact damage on my back.

"The thing that is unseen from a viewers perspective is we have completely exhausted our bodies and actually changed the physiology of bodies because they've gone into a survival mode. We lost muscle and became very skinny."