King Charles in Belfast, queen's coffin to return to London

Some people even walked past the coffin and rejoined the end of the line to get a second view.

Scotland, where the queen died at her beloved Balmoral estate in the Highlands after a 70-year reign, has been almost universal in its praise for the queen.

In the line of mourners outside St. Giles' Cathedral in the historic heart of Edinburgh, Sheila McLeay called the queen "a wonderful ambassador for our country."

"She was such an example for every single one of us. She was dignified. She was just, she was beautiful inside and out. And I have known her all of my life. And I miss her very much," she added.

The British monarchy draws more mixed emotions in Northern Ireland, where there are two main communities: mostly Protestant unionists who consider themselves British and largely Roman Catholic nationalists who see themselves as Irish.

That split fueled three decades of violence known as "the Troubles" involving paramilitary groups on both sides and U.K. security forces, in which 3,600 people died. The royal family was touched personally by the violence: Lord Louis Mountbatten, a cousin of the queen and a much-loved mentor to Charles, was killed by an Irish Republican Army bomb in 1979.

A deep sectarian divide remains, a quarter century after Northern Ireland's 1998 peace agreement.

But in a sign of how far Northern Ireland has come on the road to peace, representatives of Sinn Fein - the main Irish nationalist party, linked during the Troubles to the IRA - are attending commemorative events for the queen and meeting the king on Tuesday.

Sinn Fein's president, Mary Lou McDonald, paid tribute to the 96-year-old monarch following her death last Thursday, calling her "a powerful advocate and ally of those who believe in peace and reconciliation."

The president and prime minister of the neighboring Republic of Ireland are also due to attend the memorial service in Belfast, despite tense relations between Dublin and London over Brexit. Since Britain left the European Union in 2020, the U.K. and the EU have been wrangling over trade rules for Northern Ireland, the only part of the U.K. that shares a border with a member of the bloc.

After lying in the cathedral through most of Tuesday, the queen's coffin will be flown back to London and driven to her official London home, Buckingham Palace.

In the early hours of Tuesday, scores of workers were seen cleaning litter and weeds from the road between the air force base where the plane carrying the queen's coffin will land and central London.