In addition to members of the royal family, nearly 100 heads of state and many clergy attended the ceremony.
During the ceremony, thousands of people formed long queues on the route from Buckingham Palace to Westminster Abbey, while opponents of the monarchy took their place on the streets of London.
Activists gathered on the parade route at the coronation of King Charles III, chanting "not my King".
According to the BBC's report, the police had to make "tough choices" while handling protests during the Coronation, a minister has said, following criticism over arrests.
According to the Ihlas News Agency, the police, who intervened in the demonstration, detained Graham Smith, the leader of the anti-monarchist group Republic, and 51 demonstrators.
In the protests on The Mall in London, 14 people were detained on charges of possession of drugs and knives, 14 people were detained in east London, 12 people were detained in St Martin's Lane and Whitehall streets, 6 people were detained in Soho and Wellington Arch, and 2 people were detained in St James Park.
British Home Secretary Suella Braverman thanked the police and said they were "working hard". Unlike Braverman, the British police's detention of demonstrators has also been the target of criticism.
MPs and human rights groups have criticised the police after 52 people were arrested in London on Saturday.
Among those held was the head of the anti-monarchy group Republic, Graham Smith. He was released on Saturday evening after 16 hours in custody and said there was "no longer a right to peaceful protest in the UK".
Source: BBC - Ihlas News Agency