A fixed-wing, twin-engined UAV (unmanned aerial vehicle) is seen in front of a hangar at Lee-on-Solent airport, Britain May, 12, 2020 with Conrad Haigh, manager of Solent Transport and Professor of Aerospace Design at the University of Southampton Jim Scanlan. REUTERS/Stuart McDill

A fixed-wing, twin-engined UAV (unmanned aerial vehicle) is seen in front of a hangar at Lee-on-Solent airport, Britain May, 12, 2020. REUTERS/Stuart McDill

A fixed-wing, twin-engined UAV (unmanned aerial vehicle) is seen in front of a hangar at Lee-on-Solent airport, Britain May, 12, 2020 with Conrad Haigh, manager of Solent Transport and Professor of Aerospace Design at the University of Southampton Jim Scanlan. REUTERS/Stuart McDill

UK National Health Service employee Anni Adams looks at new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams looks at new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams shows a smartphone displaying the new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams looks at new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams looks at new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams looks at new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams shows a smartphone displaying the new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams looks at new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams looks at new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

UK National Health Service employee Anni Adams shows a smartphone displaying the new NHS app to trace contacts with people potentially infected with the coronavirus disease (COVID-19) being trialled on Isle of Wight, Britain, May 5, 2020. Picture taken May 5, 2020. REUTERS/Isla Binnie

Beekeeper Franck Portefaix, wearing a protective face mask, talks with a customer at his stand in the covered market in L'Isle-Adam near Paris during the outbreak of the coronavirus disease (COVID-19) in France, May 1, 2020. Picture taken May 1, 2020. REUTERS/Noemie Olive

Beekeeper Franck Portefaix, wearing a protective face mask, looks at honeypots as he poses at his stand in the covered market in L'Isle-Adam near Paris during the outbreak of the coronavirus disease (COVID-19) in France, May 1, 2020. Picture taken May 1, 2020. REUTERS/Noemie Olive

People are seen in Island Gardens on the Isle of Dogs in London, as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 13, 2020. REUTERS/John Sibley

People are seen in Island Gardens on the Isle of Dogs in London, as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 13, 2020. REUTERS/John Sibley

Two doctors walk along an isle towards the intensive care unit of the Ulm Bundeswehr hospital during a media event as the hospital prepares for the admission of patients, while the spread of the coronavirus disease (COVID-19) continues, in Ulm, Germany, March 24, 2020. Picture taken March 24, 2020. REUTERS/Andreas Gebert

A member of the audience wearing American flag-themed pants is seen along an isle ahead of U.S. President Trump's remarks at an Evangelicals for Trump Coalition Launch at the King Jesus International Ministry in Miami, FL, U.S., January 3, 2020. REUTERS/Tom Brenner

Nov 17, 2019; Charlotte, NC, USA; Carolina Panthers fan Grayson Marlette from Emerald Isle, NC with super fan Mad Cattah from Winston Salem, NC before the game at Bank of America Stadium. Mandatory Credit: Bob Donnan-USA TODAY Sports

Catherine, Duchess of Cambridge with Princess Charlotte look through a window at the prize giving after the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Prince George and Princess Charlotte look through a window at the prize giving after the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge with Princess Charlotte look through a window at the prize giving after the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Prince George and Princess Charlotte look through a window at the prize giving after the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Prince George and Princess Charlotte look through a window at the prize giving after the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge, looks at Britain's Princess Charlotte after she sticked her tongue out before a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Britain's Catherine, Duchess of Cambridge, reacts after Britain's Princess Charlotte sticked her tongue out before a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Prince William and Catherine, the Duchess of Cambridge watch on as Bear Grylls is awarded the King's Cup during the prize giving following the the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Bear Grylls is awarded the King's Cup during the prize giving following the the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Bear Grylls is awarded the King's Cup during the prize giving following the the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, is seen ahead of the prize giving for the the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, is seen awarded a wooden spoon during the prize giving after her boat came last in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, is seen awarded a wooden spoon during the prize giving after her boat came last in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, is seen awarded a wooden spoon during the prize giving after her boat came last in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, is seen awarded a wooden spoon during the prize giving after her boat came last in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, is seen awarded a wooden spoon during the prize giving after her boat came last in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge, reacts after Britain's Princess Charlotte sticked her tongue out before a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Britain's Catherine, Duchess of Cambridge, reacts after Britain's Princess Charlotte sticked her tongue out before a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine, Duchess of Cambridge, reacts as she receives a wooden spoon for coming last place during the King's Cup Regatta at a presentation ceremony in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine, Duchess of Cambridge reacts as she receives a wooden spoon at the King's Cup Regatta at a presentation ceremony in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine Duchess of Cambridge and Britain's Prince William react as they attend a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Bear Grylls holds the cup after winning the King's Cup Regatta at a presentation ceremony in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine Duchess of Cambridge reacts as she attends a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine Duchess of Cambridge and Britain's Prince William react as they attend a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine Duchess of Cambridge reacts, next to Britain's Prince William, as she holds a wooden spoon received during the King's Cup Regatta at a presentation ceremony in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine Duchess of Cambridge and Britain's Prince William react as they attend a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine, Duchess of Cambridge, receives a wooden spoon for coming last place during the King's Cup Regatta at a presentation ceremony in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Catherine Duchess of Cambridge smiles next to Britain's Prince William as they attend a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Britain's Princess Charlotte sticks her tongue out next to her mother, Catherine Duchess of Cambridge, before a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Britain's Princess Charlotte sticks her tongue out next to her mother, Catherine Duchess of Cambridge, before a presentation ceremony following the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls

Britain's Prince William attends the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls/Pool

Britain's Prince William attends the King's Cup Regatta in Isle of Wight, Britain August 8, 2019. REUTERS/Peter Nicholls/Pool

Catherine, Duchess of Cambridge, takes part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, takes part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, takes part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, takes part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, takes part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Catherine, Duchess of Cambridge, takes part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Prince William and Catherine, the Duchess of Cambridge take part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS

Prince William and Catherine, the Duchess of Cambridge take part in the King's Cup Regatta in Cowes, the Isle of Wight, Britain August 8, 2019. Andrew Matthews/Pool via REUTERS