According to documents obtained by Politico, foreign leaders and their spouses attending Queen Elizabeth II's funeral in London on September 19 have been told to fly to the UK on commercial flights.
The documents from the Foreign, Commonwealth and Development Office were sent from the UK to other countries. No more than one representative per country and their spouse will be invited to attend the funeral service because the FCDO expects it to be full.
Because of limited space at the state funeral service and associated events, no other members of the principal guest's family, staff or entourage can be admitted.
The FCDO advised funeral attendees to fly commercially because the airport will not have private flight arrangements or aircraft parking. Helicopter transfers between airports were banned by the department.
The world leaders were told that they couldn't use their own state cars to attend the funeral and that they would be bussed in groups.
A foreign ambassador sent a message to a reporter on Sunday asking if he could imagine Biden on the bus.
Security concerns come with preparing for an event. There may be a lack of police resources that will cause the premier league soccer games to be postponed.
Multiple and comprehensive layers of security will be in place across London and at all the official venues used for the state funeral and associated events, according to a document.
The era for the UK ended with Queen Elizabeth II's death. Her son attended the ceremony.
The coffin of the Queen is being transported to London. The Palace of Holyroodhouse is the official residence of the monarch in Scotland.
The Queen will be laid to rest next to her husband, Prince Philip, who died at age 99, in Windsor Castle.