British actor Simon Pegg was stunned when Tom Cruise performed a death-defying stunt for the new Mission Impossible movie, insisting the Hollywood legend loved the danger and has "no fear".

Cruise impressed his critics when he was pictured earlier this month (Nov10) dangling from the top of the world's tallest building during a daring sequence for the fourth installment of the action franchise.

He just looked out and looked back in with a big smile on his face, like, 'Here we go!'. And he was running round the side".

Pegg, who has a role in Mission Impossible - Ghost Protocol, was onsetfor the shoot at the Burj Khalifa tower in Dubai - and he was full of admiration for Cruise's bravery.

The Top Gun star dangled in a harness more than 2,717 feet (828 metres)in the air, and ran around the outside circumference of the building fora chase scene.

Pegg tells U.K. TV show Loose Women, "I was there watching him doing it, which was terrifying, because it was like being in a plane.

(It was at the) top of the building. It's extraordinary, and he has no fear.

He just looked out and looked back in with a big smile on his face, like, 'Here we go!'. And he was running round the side".