The former-head of MI6 has stated that he believes aliens exist - a view that's supported by more than half of Britain.

Sir John Sawers, 64, is certain extraterrestrials are out there due to the infinite size of the universe.

The Warwick-born ex-spy said it would be "extraordinary" if life only existed on earth and is adamant that we can't be alone.

He was the Chief of the Secret Intelligence Service from 2009 until 2014.

Sir John told the Daily Star: "I think it would be extraordinary if in an infinite solar system that planet Earth was unique.

“I think we should go forward on the assumption that nothing on this planet is unique."

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