EDINBURGH: After queuing for hours to pay their respects to Queen Elizabeth, the first members of the public to file past the coffin of Britain's longest-serving monarch on Monday spoke of their sadness and a sense of peace within the cathedral.

Queen Elizabeth died on Thursday in her holiday home at Balmoral in the Scottish Highlands, and her coffin was taken along the Royal Mile in the Scottish capital on Monday to lay at rest in the city's St. Giles Cathedral for 24 hours.

"It was very beautiful, very peaceful and quiet," said Marie Claire Cross, 55, who works in the National Health Service and had been queuing since 11am to enter the cathedral, before finally making it in over seven hours later.

"I was awed by the fact that I was in the cathedral with Queen Elizabeth, who I have looked up to all my life. It was awesome in the true sense of the word and it was so sad."

Television footage showed people filing slowly past the coffin, which was draped in the Royal Standard of Scotland flag and topped with a wreath of white flowers and the Crown of Scotland, historically used for the coronations of monarchs of Scotland. Some stopped to bow as they passed, others wiped away tears.

Thousands queued outside to enter the cathedral, with people due to continue paying their respects through the night.

On Tuesday, the coffin will be flown to London, where on Wednesday it will begin a period of lying in state until Sept. 19 - the day of Elizabeth's state funeral - on a catafalque at Westminster Hall.

Retired music teacher Michael Hainsworth, 70, was one of the first to enter the cathedral in Edinburgh.

"We were very upset. It was so emotional. It brought it all home. It is hard to put into words. You don’t think it will hit you but then it does," he said, as he comforted his tearful wife.

Four ceremonial guards from the Royal Company of Archers stood at the four corners of the coffin. For around ten minutes, they were also joined by King Charles and his three siblings, who held a silent, sombre vigil at their mother's side. 

"It was a really surreal moment. To see the members of the royal family there really brought it home," said Peter Cliff, 66, a retired business owner. "When you see members of the royal family there grieving it really hits you."