Queue to see the Queen's coffin: All questions answered as final details and map unveiled

A five-mile queue to see the Queen in state opens on Wednesday as 'unprecedented' crowds descend on London.

The line will wind its way up to Southwark Park in the southeast, twist along the south bank of the Thames, cross Lambeth Bridge and back to 14th-century Westminster Hall.

Mourners should keep moving and will receive wristbands to buy food from 24-hour cafes, use portable toilets or refill water bottles for free.

No10 declined to rule out a 17-35 hour wait.

Only 350,000 people would pass the Queen's coffin between 5 p.m. Wednesday and 6:30 a.m. Monday, leaving hundreds of thousands disappointed.

#10 denied there was an 'upper cap', but the queue will close early to ensure those in line have the best chance of getting to the top.< /p>

This map shows the queue route and where you can get water, food and a toilet break

The Prime Minister's spokesman said: 'We want as many people as possible to be able to come... This is an important time for the UK.

A second, shorter queue will work for disabled or vulnerable people, who can get a time slot at Tate Britain to enter the queue.

Officials have reportedly raised concerns that people are trying to "play" the second queue by faking illness. And the National Cyber ​​Security Center has warned that scammers "may seek to exploit" the Queen's death by selling tickets for the lie in state. There are no tickets and there is no charge to enter Westminster Hall.

The no-step route will be dotted with quartermasters with 1,500 standby military, police, Red Cross, St. John Ambulance, Samaritans and over 100 Boy Scouts aged 18-25.

A 'very limited' train service will operate overnight on routes including Kent, Oxford and Southampton - but not on Avanti services to Manchester, Birmingham, Liverpool and Glasgow.

The Rail Delivery Group has warned that the city center will 'be exceptionally busy' with crowded Tube stations closed and mourners urged to walk.