Britain’s Prince Andrew has been caught up in an alleged spying case after cultivating an “unusual degree of trust” with a Chinese man who was barred from the country on national security grounds.

The scandal-hit younger brother of King Charles III, was “prepared to enter into business activities” with the alleged spy, Britain’s High Court said in a written ruling Thursday, which referred to the Chinese national as H6. The court lifted an anonymity order protecting his identity on…