Harry has taken legal action over a decision not to allow him to pay for police protection for himself and his family while in the UK.
At a preliminary hearing earlier this month, Harry’s lawyers asked Mr Justice Fast to authorize a full judicial review of the decision of the Ministry of the Interior.
On Friday, he will make his decision on whether or not to authorize a full hearing.
Harry is challenging the February 2020 decision of the Executive Committee for the Protection of Royalties and Public Figures (Ravec) over his security, after being told he would no longer receive the same level of personal protection when visiting.
The Duke’s legal team is trying to argue that the security arrangements set out in a letter from Ravec, and their application when he visited the UK in June 2021, were invalid due to “procedural unfairness” as he was not given the opportunity to “advise representations”.
Shaeed Fatima QC, on behalf of the Duke, told the court earlier this month: “He was not aware at the time that the Royal House was involved … he was told it was an independent decision.”
However, interior ministry lawyers say Ravec had the right to reach the decision it made that the Duke’s security arrangements will be considered on a case-by-case basis, and argue that authorization for a full judicial review is required. will be refused.
Home Office representative Sir James Eadie QC said in written arguments that any tensions between Harry and Royal Household officials are “irrelevant” to his change in status.
Justice Swift will rule on Friday at 10 a.m.