This is the moment a Royal Navy sailor collapsed on Whitehall during a rehearsal for the coronation. The woman had to be helped from the ground after struggling during training in central London in the early hours of Wednesday.
Concerned colleagues rushed to her aid before she was escorted from the area. An onlooker, who asked to remain anonymous, said: "I felt really privileged to see [the practice]. I just wanted to show people how hard they are working - it shows how committed they are.
"It was wonderful to watch them practicing and it felt very special to be seeing it before anyone else. I was just panning across when I noticed her fall down. I hope she's okay - I felt awful for her."
A stretcher was bought for the sailor but she stood up again and didn't need it. "Someone very important looking came over to help her," the eyewitness added. "They were all very professional."
A Royal Navy spokesperson said: "We are very proud of our personnel who are working incredibly hard at this time. Their training has been scheduled to condition personnel in a measured way for the rigours of long periods of standing and marching.
"This is an intense period for them, and significant periods of rest have been scheduled before and after major periods of activity."
It's understood the woman - whose identity has been obscured - fully recovered and continued to train. King Charles III's coronation takes place in London this Saturday.
More than 6,000 members of Britain's armed forces will take part - the largest military ceremonial operation for 70 years.