Jaswant Singh Chail, 20, is due to appear at the Old Bailey on Wednesday to face three charges, including an offence under the Treason Act.
The charge under Section Two of the Act states that “on December 25 2021 at Windsor Castle, near to the person of the Queen, you did wilfully produce or have a loaded crossbow with intent to use the same to injure the person of Her Majesty Queen Elizabeth II, or to alarm her Majesty”.
The former supermarket worker had been detained in the grounds of Windsor Castle last Christmas Day at a time when the late Queen was in residence.
It is claimed that he told a protection officer: “I am here to kill the Queen,” before he was handcuffed and arrested.
Chail, from Southampton, Hampshire, is due to appear at the Old Bailey in London before senior judge Mr Justice Sweeney from 9.30am.