Medical staff protest near Downing Street after the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

Nuns react at the St Anthony's convent of Mercy Tunstall during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in Sunderland, Britain, May 28, 2020. REUTERS/Lee Smith 

Nuns react at the St Anthony's convent of Mercy Tunstall during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in Sunderland, Britain, May 28, 2020. REUTERS/Lee Smith 

Nuns react at the St Anthony's convent of Mercy Tunstall during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in Sunderland, Britain, May 28, 2020. REUTERS/Lee Smith 

Nuns react at the St Anthony's convent of Mercy Tunstall during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in Sunderland, Britain, May 28, 2020. REUTERS/Lee Smith 

NHS workers react at the Watford General Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Watford, Britain, May 28, 2020. REUTERS/Eddie Keogh 

Britain's Prime Minister Boris Johnson applauds outside 10 Downing Street during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

Britain's Prime Minister Boris Johnson outside 10 Downing Street during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

People on Clapham Common react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Dylan Martinez 

People on Clapham Common react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Dylan Martinez 

Britain's Prime Minister Boris Johnson applauds outside 10 Downing Street during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

People on Clapham Common react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Dylan Martinez 

NHS workers applaud at the Aintree University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 28, 2020. REUTERS/Phil Noble 

People on Clapham Common react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Dylan Martinez 

NHS workers react at the Aintree University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 28, 2020. REUTERS/Phil Noble 

Police officers stand guard as medical staff protest at the gates of Downing Street after the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

Medical staff protest at the gates of Downing Street after the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay TPX IMAGES OF THE DAY 

Medical staff protest at the gates of Downing Street after the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

Medical staff protest at the gates of Downing Street after the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay TPX IMAGES OF THE DAY 

Police officers react outside the Royal London Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Henry Nicholls 

Britain's Prime Minister Boris Johnson outside 10 Downing Street during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

Britain's Prime Minister Boris Johnson applauds outside 10 Downing Street during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

NHS workers applaud at the Luton and Dunstable University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Luton, Britain, May 28, 2020. REUTERS/Matthew Childs 

NHS workers react at the Watford General Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Watford, Britain, May 28, 2020. REUTERS/Eddie Keogh 

NHS workers wave at the Luton and Dunstable University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Luton, Britain, May 28, 2020. REUTERS/Matthew Childs 

NHS workers and Police officers applaud at the Luton and Dunstable University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Luton, Britain, May 28, 2020. REUTERS/Matthew Childs 

An NHS worker reacts at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

People react outside the Royal Stoke University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Stoke-on-Trent, Britain, May 28, 2020. REUTERS/Carl Recine 

A member of the public and NHS workers react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

NHS workers react at the Royal London Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Henry Nicholls 

NHS workers react at the Royal London Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Henry Nicholls 

Britain's Prime Minister Boris Johnson applauds outside 10 Downing Street during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

NHS workers react at the Royal London Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Henry Nicholls 

NHS workers react at the Watford General Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Watford, Britain, May 28, 2020. REUTERS/Eddie Keogh 

Medical staff protest at the gates of Downing Street after the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in London, Britain, May 28, 2020. REUTERS/Hannah Mckay 

An NHS worker reacts at the Watford General Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Watford, Britain, May 28, 2020. REUTERS/Eddie Keogh 

A Care worker and resident of the Scisset Mount Care Home react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Huddersfield, Britain, May 28, 2020. REUTERS/Molly Darlington 

NHS workers react at the Aintree University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 28, 2020. REUTERS/Phil Noble 

NHS workers applaud at the Aintree University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 28, 2020. REUTERS/Phil Noble 

Care workers and residents of the Scisset Mount Care Home react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Huddersfield, Britain, May 28, 2020. REUTERS/Molly Darlington 

Care workers and residents of the Scisset Mount Care Home react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Huddersfield, Britain, May 28, 2020. REUTERS/Molly Darlington 

Care workers and residents of the Scisset Mount Care Home react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Huddersfield, Britain, May 28, 2020. REUTERS/Molly Darlington 

A police officer reacts at the Watford General Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Watford, Britain, May 28, 2020. REUTERS/Eddie Keogh 

Care workers and residents of the Scisset Mount Care Home react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Huddersfield, Britain, May 28, 2020. REUTERS/Molly Darlington 

NHS workers and members of the public react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

NHS workers react at the Aintree University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 28, 2020. REUTERS/Phil Noble 

NHS workers react at the Aintree University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 28, 2020. REUTERS/Phil Noble TPX IMAGES OF THE DAY 

NHS workers react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs TPX IMAGES OF THE DAY 

NHS workers react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

NHS workers react at the Aintree University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 28, 2020. REUTERS/Phil Noble 

Members of the public react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

NHS workers and members of the public react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

NHS workers react at the Royal Stoke University Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Stoke-on-Trent, Britain, May 28, 2020. REUTERS/Carl Recine 

Members of the public react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

Staff of St. Mary’s Chippy react during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Milton Keynes, Britain, May 28, 2020. REUTERS/Andrew Boyers 

People react at the St Anthony's convent of Mercy Tunstall during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), in Sunderland, Britain, May 28, 2020. REUTERS/Lee Smith 

NHS workers and members of the public react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

NHS workers react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

NHS workers and members of the public react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs 

Members of the public react at the Chelsea and Westminster Hospital during the last day of the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 28, 2020. REUTERS/Kevin Coombs