Hundreds of people have gathered in Hyde Park in central London to protest against wearing masks.
Crowds commenced assembling at about 1 pm on Sunday ahead of an expected march organised by campaign organisation Keep Britain Free.
They originally hovered nearby Marble Arch in the capital to listen to talks for about two hours.
Throughout the coronavirus pandemic, masks have been made mandatory on public transport in the UK.
Face coverings will also become compulsory in stores and supermarkets in England from July 24.
Those who fail to use a mask face fine of up to £100.
Keep Britain Free claims it sees the new guidance as an impingement of civil liberties.
One of the organisers, Leah Butler-Smith, who was attending the demonstration, said the group is not concerned about people who want to wear a mask.
“It is just the point that people are being told they have no option about wearing a mask,” she told Sky News.
“Because the Government started out saying ‘there is absolutely no need for a mask’, and many other important scientists have reportedly said the same, it did not make any sense why they suddenly said it was going to be mandated,” she added.
“If the Government wants to protect the public and give them more confidence, then they should stop trying to use the pressure approach or to make people scared.”
Asked whether she thinks other governments around the world which are encouraging using face masks to prevent transmission, Ms Butler-Smith said: “I would believe them if they did not keep changing their mind every five minutes.”
She also said that she had no plan of wearing a mask and would not accept a fine, because it would not be “valid”.