Under the arrangements, members of the public will join the line on the Albert Embankment, which will run behind the London Eye on to the South Bank before following the river past landmarks such as the National Theatre, Tate Modern and HMS Belfast, reaching “maximum capacity” at Southwark Park.
Once mourners have passed through the Albert Embankment they will be directed across Lambeth Bridge and through airport-style security before entering the Palace of Westminster.
The lying-in-state opens to the public at 5pm on Wednesday and will be accessible 24 hours a day until it closes at 6.30am on Monday, September 19 — the day of the Queen’s state funeral.
Metropolitan Police officers will be joined by volunteers and stewards, while toilets and water fountains will also be provided along the route.
A wristband system will be used to manage the queue, with those waiting in line given a coloured and numbered wristband which organisers said would be specific to each person and “strictly non-transferable”.
“Your wristband also allows you to leave the queue for a short period to use a toilet or get refreshments,” according to the official guidance.
The main queue has step-free access, the Government said, with a separate accessible route also planned to run from Tate Britain where timed entry slots will be issued for a queue going along Millbank.
Guide dogs will be allowed inside Westminster Hall, with sign language interpreters also on hand.
Venues including the Southbank Centre, the National Theatre and Shakespeare’s Globe will open for longer hours to accommodate those queuing, and the British Film Institute will be providing an outdoor screen with archive footage of the Queen.
Strict rules on bags will be in place, with those visiting Westminster Hall urged to plan ahead.
Once inside, the public can walk past the coffin of the Queen, which will be raised on a catafalque and will be draped in the Royal Standard, with the orb and sceptre placed on top.
It will be guarded at all hours by units from the Sovereign’s Bodyguard, the Household Division or Yeoman Warders of the Tower of London.