An alleged Chinese spy who forged a close relationship with Prince Andrew has been identified by a British court, the latest twist in a case that has shone a light on Beijing’s influence inside Britain’s institutions.

An alleged Chinese spy who a judge ruled had formed an "unusual degree of trust" with the Duke of York has been named as Yang Tengbo. He was previously known only as H6 due to an anonymity order protecting his identity, but a High Court judge ruled on Monday that he could be named.

The story has attracted attention as evidence of a potential national security threat from China and as another scandal that involves the prince’s relationships.