MPs are vowing to defy the courts to name the alleged Chinese spy as the only way to bring about a full investigation into the affair.

They are threatening to use Parliamentary privilege to expose the man if the courts fail to lift an anonymity order.

Tory, Labour and Reform UK MPs have agreed that only by revealing the alleged spy’s identity could the full facts be uncovered.

There were also calls last night for Prince Andrew to be punished by losing his membership of the Order of the Garter, the nation’s most senior order of chivalry.

Currently, the supposed spy is known only as H6 after he was granted an interim anonymity order. 

Last night, Reform leader Nigel Farage said his party was prepared to name the man if the courts did not lift the order – using Parliamentary privilege which protects MPs from legal action when speaking in the House of Commons Chamber.

He said: ‘The man should be named immediately – otherwise, the whole thing smacks of an establishment cover-up. 

'If it’s not resolved in the courts, he should be named in the Commons. It’s clearly in the national interest.’ 

Former Tory leader Sir Iain Duncan Smith will on Monday seek a Commons debate on the suspect’s alleged activities despite the convention that MPs do not discuss the affairs of senior Royals.

Sir Iain, who was himself sanctioned by China, said: ‘Parliament has a right to know because the Royals are at the top of our Government.’ 

Labour MP Graham Stringer added it was ‘ludicrous for this person to remain anonymous in the country he was allegedly spying on’.

Labour peer George Foulkes called for Prince Andrew to be stripped of his membership of the ancient Order of the Garter.

He said: ‘I say this with a heavy heart. But following the revelations about his entanglements with an alleged Chinese spy, I do not believe Andrew’s behaviour is compatible with membership of this ancient order of chivalry.’