General view of allotments next to the River Ver, flooded due to the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

General view of allotments next to the River Ver, flooded due to the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

General view of allotments next to the River Ver, flooded due to the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

A warning sign is seen at an allotment next to the River Ver, during a flood caused by the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

General view of flooded allotments next to the River Ver, caused by the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

General view of flooded allotments next to the River Ver, caused by the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

A bench is seen at an allotment next to the River Ver, during a flood caused by the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

A plastic chair floats at an allotment next to the River Ver, during a flood caused by the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

A warning sign is seen at an allotment next to the River Ver, during a flood caused by the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

General view of flooded allotments next to the River Ver, caused by the heavy rainfall, in St. Albans, Britain, 19 January 2021. REUTERS/Paul Childs

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

A sniffer dog is pictured at the site where police started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

A sniffer dog is pictured at the site where police started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police searches near the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police carry a container at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police carry a container towards the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police carry a container towards the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police walk near the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police walk near the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police walk near the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police works at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

An excavator is pictured at the site where police started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police set up a fence at the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police vehicles are parked near the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police vehicles are parked near the site where they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Journalists work near the site were police started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Police walk along the site after they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

A police tent is set up after they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

Journalist wait after police started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

A police vehicle is pictured after they started digging in an allotment area near Hanover, Germany July 29, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Fabian Bimmer

A police officer is pictured after they started digging in an allotment area near Hanover, Germany July 28, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Stringer

A police vehicle is pictured after they started digging in an allotment area near Hanover, Germany July 28, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Frank Witte

Police secures the area after they started digging in an allotment area near Hanover, Germany July 28, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Frank Witte

Media gathers, after police started digging in an allotment area near Hanover, Germany July 28, 2020, where Christian B, a suspect in the Madeleine McCann investigation lived for a while some years ago. REUTERS/Frank Witte

Rajinder Singh skips on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh skips on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh exercises on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh exercises on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh waters plants on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh exercises on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh exercises on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh exercises on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh exercises on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

Rajinder Singh exercises on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs TPX IMAGES OF THE DAY

Rajinder Singh cuts the grass on his allotment in Harmondsworth, the 73 year old is raising money for the NHS by posting daily workout videos online and is gaining a following on social media as the 'Skipping Sikh', following the outbreak of the coronavirus disease (COVID-19), Harmondsworth, Britain, May 7, 2020. REUTERS/Paul Childs

A mural of former Sunderland player Raich Carter is seen in the background as gardener Peter works in his allotment, amid the outbreak of the coronavirus disease (COVID-19), in Hendon, Sunderland, Britain, April 21, 2020. REUTERS/Lee Smith

A mural of former Sunderland player Raich Carter is seen in the background as gardener Peter works in his allotment, amid the outbreak of the coronavirus disease (COVID-19), in Hendon, Sunderland, Britain, April 21, 2020. REUTERS/Lee Smith

A man relaxes on his allotment in Gateshead, as the spread of the coronavirus disease (COVID-19) continues, Gateshead, Britain, April 8, 2020. REUTERS/Lee Smith

A general view of allotments as the spread of the coronavirus disease (COVID-19) continues, High Handenhold, Britain, March 29, 2020. REUTERS/Lee Smith

A woman works at their allotment in Verdin Park, as the spread of the coronavirus disease (COVID-19) continues, Northwich, Britain, March 26, 2020. REUTERS/Molly Darlington

A person works at their allotment in Verdin Park, as the spread of the coronavirus disease (COVID-19) continues, Northwich, Britain, March 26, 2020. REUTERS/Molly Darlington

People work on their allotments at West Street Allotments in Hertford as the spread of the coronavirus disease (COVID-19) continues, in Hertford, Britain, March 26, 2020. REUTERS/Andrew Couldridge

People work on their allotments at West Street Allotments in Hertford as the spread of the coronavirus disease (COVID-19) continues, in Hertford, Britain, March 26, 2020. REUTERS/Andrew Couldridge

Nick Cheal poses on his allotment at Cromwell road allotments in Hertford as the spread of the coronavirus disease (COVID-19) continues, Hertford, Britain, March 19, 2020. REUTERS/Andrew Couldridge