Follow more news on Queen Elizabeth II's death and funeral here.
The coffin of Queen Elizabeth II is now at London's Westminster Hall, where the monarch will lie in state before her state funeral on Monday.
The Queen's son, King Charles III, was joined by his sons, Prince William and Prince Harry, and other members of the royal family as he walked behind the coffin during its procession route Wednesday.
The end of the queue for people to view Queen Elizabeth II lying in state is currently near London Bridge, according to the UK government’s live tracker.
The queue is approximately 2.9 miles long (about 4 kilometers), the tracker says.
Speaking to the BBC on Wednesday, UK Culture Secretary Michelle Donelan said that the government is expecting “extremely large queues, that could go up to thirty hours.”
She added that “it won’t be thirty hours for everybody” but said that it was important people knew how long it could potentially take.
Donelan added that there will be more than 1,000 people per day on hand to help those in the queue, including from the Samaritans, the Red Cross, and the Metropolitan Police.
A woman who waited for two days to pay her respects to Queen Elizabeth II at Westminster Hall said she became emotional as she passed by the late monarch's coffin.
"It's really, really emotional. It's so sad. It reminds me of when my mom died in Ghana, and all the family has to go around and then pay our respects and say farewell to her. I couldn't contain my emotion. Emotion is something natural. You can't think, it has to come out. ... I was choked up and had to cry," Grace told CNN's Bianca Nobilo.
Grace said that all the chairs have been taken away in Westminster Hall and mourners are in a single line to file past the Queen's coffin.
"I was sad, just so sad not to see her again," she said.
The first members of the public were seen entering Westminster Hall to view Queen Elizabeth II's coffin lying in state after the hall was officially opened to the public at 12 p.m. ET (5 p.m. local time).
The Queen will lie in state until the morning of her funeral on Monday.
Tesco supermarkets across the UK will close on the day of the late Queen's state funeral, Tesco announced in a statement on Wednesday.
"On the morning of the funeral on Monday 19 September our stores across the UK will remain closed to allow our colleagues to pay their respects," said Jason Tarry, Tesco UK's CEO, in the statement.
However, some shops will remain open as an exception.
"A small number of our London stores will be open along the funeral procession," the statement added.
People in a 2.5-mile-long line (about 4 kilometers) in London to pay their respects to Queen Elizabeth II explained why they wanted to visit her coffin in Westminster Hall.
"I just feel like I will regret it if I don't. And I just felt like I needed to come and say goodbye. That's just me. And also, when my family has children — my boys have children — I'd like to teach them the history of it all. So, it just needed to be done today," one woman told CNN's Anna Stewart as she waited in line.
A group told Stewart that they were told the line could last about five hours from where they stood, but the queue is moving.
PBS announced a change in programming plans for coverage of the funeral of Queen Elizabeth II.
"The U.S and the Holocaust," a three-part film directed by documentarian Ken Burns, will no longer air on Monday to accommodate special programming from PBS and BBC around the funeral.
Episode 1 of the docuseries will still premiere on Sunday, with the second episode moving to Tuesday.
Catherine, the Princess of Wales, wore a diamond and pearl leaf brooch that belonged to Queen Elizabeth II at the short service marking the arrival of the late monarch's coffin at Westminster Hall, according to the UK’s Press Association.