Foreign leaders 'to take bus to Queen's funeral from secret location'

US President Joe Biden and other foreign leaders will be transported en masse to Westminster Abbey for the Queen's funeral and are advised to 'arriving on commercial flights

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The coffin of Queen Elizabeth II is carried inside Holyroodhouse

Foreign leaders attending the Queen's funeral will be packed into coaches and taken to Westminster Abbey together, according to official documents seen by .

Heads of state and their wives have also been asked to arrive in the UK on commercial flights and have been banned from using their own helicopters and cars.

The protocol for the service on Monday, September 19 is very specific and only leaders and their partners are invited from each country represented.

This means US President Joe Biden and his wife, Dr. Jill Biden, could choose not to fly over Air Force One.

And they certainly can't use the private Marine One helicopter once in Britain or arrive at the Abbey in the Presidential Cadillac - The Beast.

For the latest updates as the world mourns the start of the reign of the Queen and King Charles III, follow our live blog.

US President Joe Biden was among those invited to the funeral (

Picture:

REUTERS)

Instead, they will be side-by-side with other leaders on a bus that will collect them all from an undisclosed location in west London.

An official document from the UK Foreign Office states that "due to strict security measures and road restrictions" they must leave their own car and use the coaches provided.

The memorandum, sent to embassies overseas on Saturday evening and seen by , states that it "regrets that due to the limited space for the state funeral service and associated events, no other members of the family, staff or entourage of the main guest cannot be admitted."