A history professor at the London School of Economics asserts that Conservative Party leadership candidate Rory Stewart is a "spy" who is being backed by the establishment to destroy Brexit.

Stewart has denied claims he spied for MI6 after it was revealed that he was recruited by the Secret Intelligence Service after graduating from Oxford University.

The London Telegraph reported, "Claims from a Whitehall security source, who said that Mr Stewart had spent seven years as a spy before entering Parliament."

However, according to Alan Sked, emeritus professor of international history at the London School of Economics, it is "very likely" that Stewart is an establishment plant who has been tasked with derailing Brexit.

"It is beginning to look as if Stewart is an MI6 officer (spy). His father was deputy head of MI6 for most of the 1970s and a leak from an intelligence source says that Rory was a spy for seven years before becoming an MP. The last throw of the SIS to destroy Brexit? Very likely," said Sked.