Ambulance crews treated nearly 300 members of the public along the route of the queue to see the Queen lying in and around the state on the day the line officially opened.
Some 291 people along the queue’s route and near London received medical assistance on Wednesday, including 17 requiring hospital treatment, the London Ambulance Service (LAS) said.
On Wednesday, members of the public lined the streets to see the Queen’s coffin leave Buckingham Palace for Westminster Hall, while thousands began the long process of queuing to see the Queen lying down in condition.
A spokeswoman for LAS said: ‘Together with our partners, we treated 291 patients yesterday until midnight along the Queue and surrounding areas including Hyde Park, Whitehall and Millbank.
“Seventeen of these patients were taken to hospital.”
Over the next few days, tens of thousands of people will queue for hours for the chance to see the queen lying in state.
Government guidelines advise future queues that they will have to ‘stand for many hours, possibly overnight, with very little opportunity to sit down as the queue will continuously move “.
A separate, shorter and accessible queue is available for people with disabilities or long-term illness, who have special needs or who are unable to stand for an extended period.
St John Ambulance said its volunteers and medical professionals have treated more than 400 people around Buckingham Palace and other sites since it began providing round-the-clock medical assistance last Friday.
More than half of them – 235 people – received treatment in London and Windsor on Wednesday.
A small number of patients presented with medical emergencies and required hospitalization, the charity said, and the most common complaints were blisters, dehydration and feeling faint.
The charity has 30 treatment centers in London, including along the road leading to the resting state at Westminster Hall.
Some 600 St. John Ambulance volunteers are on site along with hundreds of other volunteers, stewards, marshals and police.
The charity said it was ‘proud and privileged’ to provide first aid and issued advice on how queues can ensure they are prepared.
He recommends people pack extra clothes, such as several thin layers, socks and raincoats, an umbrella that can also be used as a sunshade, comfortable shoes and bandages for blisters.
Lineups should also ensure they have enough food and water to stay hydrated, eat and drink regularly, and have enough medication if needed.
Dr Lynn Thomas, Medical Director of St John Ambulance, said: ‘This is a difficult time for many, and the news can affect people in different ways.
“So look out for each other, and if you’re upset and struggling emotionally, please ask for help and talk to someone.
“Last, but most importantly, head to a St. John Ambulance treatment center or seek out one of our volunteers if you or someone you are with is injured or not feeling well.”