Hundreds of thousands of people are expected to line up through central London to pay their respects to Her Majesty.
The four-mile long queue route stretches along the River Thames to Westminster Hall, at the Palaces of Westminster.
From Albert Embankment, the queue runs along Belvedere Road behind the London Eye, and onto the South Bank where it follows the Thames past the National Theatre, the Tate Modern and the HMS Belfast, before passing under Tower Bridge and along to Southwark Park.
The tracker has been created by the Department for Digital, Culture, Media and Sport (DCMS).
Extra transport services, including additional night trains, have been put on to help mourners get in and out of central London to pay their respects from Wednesday to Monday.
Mourners are being urged to check Transport for London’s (TfL) latest updates.
A number of roads around the queue area are closed to vehicle and bicycle traffic, and are only accessible on foot.
The former England football captain was seen wearing a dark flat cap, suit and tie as he waited to pay his respects.
He told reporters: “This day was always going to be a difficult day.
“Our thoughts are with the family, it’s very special to hear all of the stories from people here.
“The most special moment for me was to receive my OBE. I took my grandparents with me who were huge royalists.
“I was so lucky that I was able to have a few moments like that in my life to be around Her Majesty.”
“It’s a sad day, but a day to remember.” Last week Beckham said the outpouring of grief around the world following the monarch’s death demonstrated “how much she inspired us with her leadership”.
“I’m truly saddened by the death of Her Majesty, The Queen. What an outpouring of love and respect we saw for the Platinum Jubilee for her life of service,” he wrote on Instagram.
“How devastated we all feel today shows what she has meant to people in this country and around the world. How much she inspired us with her leadership.
“How she comforted us when times were tough. Until her last days she served her country with dignity and grace.
“This year she would have known how loved she was. My thoughts and prayers are with our Royal Family.”
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