Ifthe Queen does not vary the qualifications laid down by George V then he/she won't be. The rank of HRH is restricted to children of the sovereign, grandchildren through the male line and the eldest son of the eldest son of the Prince of Wales. This can be varied by the monarch. While George VI was alive Prince Charles and Princess Anne would not have been entitled as such, but the King issued letters patent that any children of the then Princess Elizabeth should have royal status.