A woman gestures from the window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

A man waves from the window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

Sole waves from a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 16, 2021.

A person holds a sign from a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, amidst the coronavirus disease (COVID-19) outbreak in London, Britain, February 16, 2021.

A woman with a child looks through a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

People arrive to the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

Mohammed Mostafa and Mohamed Noor, men who are quarantining, take their daily exercises outside the Holiday Inn Hotel near Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 16, 2021.

A paper bag with a message written on it is seen in a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, amidst the coronavirus disease (COVID-19) outbreak in London, Britain, February 16, 2021.

A person looks through a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

A woman carries her luggage as she arrives at the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

Mohamed Noor, a man who is quarantining, gestures to the security guards while he takes his daily exercises outside the Holiday Inn Hotel near Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 16, 2021.

A person holds a sign from a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, amidst the coronavirus disease (COVID-19) outbreak in London, Britain, February 16, 2021.

Zari Tadayon looks through a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

A man looks through a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

A passenger with a child leaves a bus as he arrives at the Holiday Inn Hotel near Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 16, 2021.

People look out from a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, amidst the coronavirus disease (COVID-19) outbreak in London, Britain, February 16, 2021.

A person holds a COVID-19 test kit at a window of the Radisson Blu Hotel at Heathrow Airport, as the country introduces a hotel quarantine programme due to the coronavirus disease (COVID-19) pandemic in London, Britain, February 17, 2021.

Passengers arrive at the Radisson Blu hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

A person looks out of a window of the Radisson Blu Hotel at Heathrow Airport, as the country introduces a hotel quarantine programme due to the coronavirus disease (COVID-19) pandemic in London, Britain, February 17, 2021.

A passenger disembarks a coach as he arrives at the Holiday Inn Hotel near Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 16, 2021.

Journalists show messages to a passenger staying at the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

Passengers from the red route zone are driven in a bus to the Radisson Blu hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, in London, Britain, February 15, 2021.

A person holds a sign from a window of the Radisson Blu Hotel at Heathrow Airport, as Britain introduces hotel quarantine programme for arrivals from a "red list" of 30 countries, amidst the coronavirus disease (COVID-19) outbreak in London, Britain, February 16, 2021.

A person holds a handwritten sign at a window of the Radisson Blu Hotel at Heathrow Airport, as the country introduces a hotel quarantine programme due to the coronavirus disease (COVID-19) pandemic in London, Britain, February 17, 2021.