King Charles led a procession of the coffin of his mother Queen Elizabeth II through London on Wednesday before hundreds of thousands of people pay their final respects.
Queen Elizabeth's body was borne on a horse-drawn gun carriage from her Buckingham Palace home to Westminster Hall where she will remain for four days until her funeral next Monday.
The king and other senior royals were seen walking in silence behind the hearse as it winds through the capital's streets and then hold a vigil upon its arrival at the cavernous 12th-century hall in the Westminster parliament complex.
Strict rules and airport-style security measures have been put in place, with "far more" people expected than the 200,000 who filed past the coffin of the queen's mother when she died in 2002, according to Prime Minister Liz Truss's spokesman.
Here are the Highlights on Queen Elizabeth's Funeral Procession
Queen's coffin reached Westminster Hall where it will lie in state
Nearly six million people tried to follow a British Royal Air Force transport aircraft taking Queen Elizabeth II's coffin from Edinburgh in Scotland to London, making it the most tracked flight in history, website Flightradar24 said on Wednesday.
The previous record was when a US military aircraft carrying US House Speaker Nancy Pelosi to Taiwan last month was followed by 2.2 million people on Flightradar24.
On Tuesday, nearly six million people tried to follow the British military plane's route from Edinburgh to RAF Northolt within its first minute in the air, the website said.
Senior royals are part of procession.
Horses participating in the procession of late Queen Elizabeth's coffin from Buckingham palace to Westminster Hall have undergone special training. 'Crying' soldiers threw flowers at the horses several times during the rehearsal to make them familiar to the sound of 'sobbing'.
The ceremony will see the coffin on a gun carriage from Buckingham Palace to Westminster Hall for lying in state.
The King will lead a procession behind the late Queen's coffin.
The coffin will leave Buckingham Palace at 6.55 pm (IST) and arrive at Westminster Hall at 8 pm (IST)
King Charles III leads a procession of the coffin of his mother Queen Elizabeth II through London on Wednesday before hundreds of thousands of people pay their final respects.