A general view of the sandy beach at Golden Bay outside Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

Unused sunbeds are seen piled on each other on the sandy beach at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

Unused sunbeds are seen piled on each other on the sandy beach at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A general view of the Saluting Battery at the Upper Barrakka Gardens overlooking Grand Harbour in Valletta, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People walk outside St John's Co-Cathedral in Valletta, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A detail on a traditional fishing boat is seen in the fishing village of Marsaxlokk, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People swim in the sea off the sandy beach at Golden Bay outside Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People use a telescope at the Upper Barrakka Gardens overlooking Grand Harbour in Valletta, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A man kite surfs at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

Fishermen wear protective face masks as they prepare their nets next to a traditional fishing boat in the fishing village of Marsaxlokk, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People relax on the sandy beach which is undergoing extensive cleaning at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People sunbathe on the sandy beach at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People sit on the sandy beach at St George's Bay in St Julian's, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A man kite surfs at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A fisherman works on a traditional fishing boat in the fishing village of Marsaxlokk, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People sit near traditional fishing boats in the fishing village of Marsaxlokk, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A man sits on the sandy beach which is undergoing extensive cleaning at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A woman sunbathes on the sandy beach which is undergoing extensive cleaning at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People walk out of the main gate leading into the medieval fortified city of Mdina, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative Covid-19 test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People relax on the sandy beach at Golden Bay outside Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People relax on the sandy beach at Golden Bay outside Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People relax on the sandy beach at Golden Bay outside Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative Covid-19 test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People relax on the sandy beach which is undergoing extensive cleaning at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative coronavirus disease (COVID-19) test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi??

People sunbathe on the sandy beach which is undergoing extensive cleaning at Ghadira Bay in Mellieha, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative Covid-19 test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People relax at the Upper Barrakka Gardens overlooking Grand Harbour in Valletta, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative Covid-19 test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

The Metropolitan Cathedral of Saint Paul is seen in the medieval fortified city of Mdina, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative Covid-19 test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

A woman and her dog walk out of the main gate leading into the medieval fortified city of Mdina, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative Covid-19 test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

People walk past the Natural History Museum in the medieval fortified city of Mdina, as Malta may be one of the countries added to a 'green' list where UK travellers will be able to visit with a negative Covid-19 test to be shown before travel but no quarantine needed after returning from holiday, Malta May 4, 2021. REUTERS/Darrin Zammit Lupi

Tourists wearing protective face masks walk down the steps at the city entrance as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

A local law enforcement warden wearing a protective face mask issues a fine to a person for not wearing his mask properly as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks walk in the city main street as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

Women wearing protective face masks carry shopping bags as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks walk past a shop as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

A shop assistant wearing a protective face mask cleans a window as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks queue to enter a shopping arcade as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks queue to enter a shopping arcade as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks queue to enter a shopping arcade as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

A woman wearing a protective face mask enters a shop as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks walk in the city main street as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

A salesperson wearing a protective face mask works as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

A salesperson wearing a protective face mask works as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

A shop assistant cleans the facade as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

A woman wearing a protective face mask checks her shopping change next to a shop assistant cleaning the facade as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks walk through the main city gate as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

People wearing protective face masks walk past a shop window as non-essential shops and services reopen for business after a seven-week-long shutdown because of the coronavirus disease (COVID-19) pandemic, in Valletta, Malta April 26, 2021. REUTERS/Darrin Zammit Lupi

Reenactors of the Malta Heritage Trust fire a nine-gun salute to honour Britain's Prince Philip before his funeral, at the Upper Barrakka Saluting Battery overlooking Grand Harbour, in Valletta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactors of the Malta Heritage Trust fire a nine-gun salute to honour Britain's Prince Philip before his funeral, at the Upper Barrakka Saluting Battery overlooking Grand Harbour, in Valletta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactors of the Malta Heritage Trust fire a nine-gun salute to honour Britain's Prince Philip before his funeral, at the Upper Barrakka Saluting Battery overlooking Grand Harbour, in Valletta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactors of the Malta Heritage Trust fire a nine-gun salute to honour Britain's Prince Philip before his funeral, at the Upper Barrakka Saluting Battery overlooking Grand Harbour, in Valletta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi TPX IMAGES OF THE DAY

Reenactors of the Malta Heritage Trust fire a nine-gun salute to honour Britain's Prince Philip before his funeral, at the Upper Barrakka Saluting Battery overlooking Grand Harbour, in Valletta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Ex Royal Navy WREN officer Elaine Zerafa, Secretary of the Royal Naval Association (Malta Branch) holds a picture of Prince Philip to honour him before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, flanked by Reenactor members of the Malta Command WW2 Living History Group, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactor members of the Malta Command WW2 Living History Group honour Prince Philip before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

A picture and flowers are seen outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, on the day of Prince Philip's funeral, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

A woman lays flowers to honour Prince Philip before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

A woman visits Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, to honour Prince Philip before his funeral in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactor members of the Malta Command WW2 Living History Group honour Prince Philip before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactor members of the Malta Command WW2 Living History Group and Ex Royal Navy WREN officer Elaine Zerafa, Secretary of the Royal Naval Association (Malta Branch) hold a picture of Prince Philip to honour him before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactor members of the Malta Command WW2 Living History Group and Ex Royal Navy WREN officer Elaine Zerafa, Secretary of the Royal Naval Association (Malta Branch) salute to honour Prince Philip before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

Reenactor members of the Malta Command WW2 Living History Group and Ex Royal Navy WREN officer Elaine Zerafa, Secretary of the Royal Naval Association (Malta Branch) hold a picture of Prince Philip to honour him before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi

A person lays flowers to honour Prince Philip before his funeral, outside Villa Guardamangia, a former residence of Britain's then-Princess Elizabeth and Prince Philip between 1949 and 1951, in Pieta, Malta April 17, 2021. REUTERS/Darrin Zammit Lupi