A woman wearing a protective face mask sits in the winter sunshine with St. Paul's Cathedral seen behind amidst a lockdown during the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, January 7, 2021.

A fox walks outside 10 Downing Street, in London, Britain, January 6, 2021.

A man pushes his bike across Putney Bridge on the River Thames which is usually full with traffic as Britain began its third COVID-19 lockdown in London, Britain, January 6, 2021.

A couple exercise beside the River Thames at low tide with The Shard skyscraper seen behind amidst a lockdown during the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, January 7, 2021.

People walk over the Millennium footbridge amidst the COVID-19 pandemic, London, Britain, January 7, 2021.

A woman walks her dog along a path next to the River Thames, with the City of London financial district in the background, Britain, January 8, 2021.

An ambulance crosses Westminster Bridge, with the Houses of Parliament in the background, as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, January 8, 2021.

People wearing face masks wait at a bus stop on London Bridge, amid the outbreak of the coronavirus disease (COVID-19), with the City of London financial district in the background, Britain, January 8, 2021.

Fountains are lit blue in Trafalgar Square in support of the Clap for Heroes campaign following the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, January 7, 2021.

People walk at Primrose Hill park amid the coronavirus disease (COVID-19) outbreak, in London, Britain January 6, 2021.

A public health information sign is seen with St. Paul's Cathedral seen behind amidst a lockdown during the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, January 7, 2021.

People exercise beside the River Thames amidst the COVID-19 pandemic, London, Britain, January 7, 2021.

Police officers on horseback patrol the financial district, as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, January 8, 2021.

The London Eye wheel is lit in blue in support of the Clap for Heroes campaign following the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, January 7, 2021.

An almost empty Trafalgar Square is seen amidst a COVID-19 pandemic lockdown in London, Britain, January 7, 2021.

A man wearing a face mask talks on the phone at the entrance of a subway station, as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, January 8, 2021.

Fountains are lit blue in Trafalgar Square in support of the Clap for Heroes campaign following the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, January 7, 2021.

An ambulance attends an emergency call, amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, January 7, 2021.

A man walks near St. Paul's cathedral amidst the COVID-19 pandemic, London, Britain, January 7, 2021.

An almost empty Trafalgar Square is seen amidst a COVID-19 pandemic lockdown in London, Britain, January 7, 2021.

A man rests beside the River Thames amidst the COVID-19 pandemic, London, Britain, January 7, 2021.

The London Eye wheel is lit in blue in support of the Clap for Heroes campaign following the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, January 7, 2021.

A woman speaks on her phone outside a shop which is being redecorated and covered with newspapers as Britain continues its third COVID-19 lockdown in London, Britain, January 8, 2021.

A bus drives past a Government sign about the coronavirus disease (COVID-19), in the City of London financial district, Britain, January 8, 2021.

People exercise beside the River Thames amidst the COVID-19 pandemic, London, Britain, January 7, 2021.