Milkman Darren Clark stocks his milk float ahead of his delivery round at a dairy farm in Cheshunt, as business for his company 'Mr Milk' booms, as the spread of the coronavirus disease (COVID-19) continues in Hertfordshire, Britain, April 26, 2020. Picture taken April 26, 2020. REUTERS/Hannah McKay

A thank you note from a customer is seen in the windscreen of the milk float during the morning delivery round in the town of Sawbridgeworth, as business for the 'Mr Milk' milkman company booms, as the spread of the coronavirus disease (COVID-19) continues in Hertfordshire, Britain, April 22, 2020. Picture taken April 22, 2020. REUTERS/Hannah McKay

Empty milk bottles are returned to the milk float during the morning delivery round in the town of Sawbridgeworth, as business for the 'Mr Milk' milkman company booms, as the spread of the coronavirus disease (COVID-19) continues in Hertfordshire, Britain, April 22, 2020. Picture taken April 22, 2020. REUTERS/Hannah McKay

Bottles of milk are seen on a milk float during the morning delivery round in the town of Sawbridgeworth, as business for the 'Mr Milk' milkman company booms, as the spread of the coronavirus disease (COVID-19) continues in Hertfordshire, Britain, April 22, 2020. Picture taken April 22, 2020. REUTERS/Hannah McKay

Milkman Darren Clark collects crates of milk bottles to stock his milk float ahead of his delivery round at a dairy farm in Cheshunt, as business for his company 'Mr Milk' booms, as the spread of the coronavirus disease (COVID-19) continues in Hertfordshire, Britain, April 26, 2020. Picture taken April 26, 2020. REUTERS/Hannah McKay

Milkman Darren Clark checks an order in his milk float during his delivery round in the town of Ware, as business for his company 'Mr Milk' booms, as the spread of the coronavirus disease (COVID-19) continues in Hertfordshire, Britain, April 26, 2020. Picture taken April 26, 2020. REUTERS/Hannah McKay

People take photos of California Milk Advisory Board's "Legacy of Generations" float which was featured in the 128th annual Rose Parade in Pasadena, California U.S., January 3, 2017. REUTERS/Mario Anzuoni

A lifelike model of gay rights pioneer Harvey Milk is seen on a parade float in a gay pride parade in San Francisco, California June 28, 2015. REUTERS/Elijah Nouvelage

A Kashmiri man carries water and milk as he wades through a flooded street in Srinagar September 12, 2014. Authorities in Kashmir collected the bodies of women and children floating in the streets on Thursday as anger mounted over what many survivors said was a bungled operation to help those caught in the region's worst flooding in 50 years. REUTERS/Adnan Abidi (INDIAN-ADMINISTERED KASHMIR - Tags: DISASTER)

A boy pours milk on floating flowers during the Ganga Dhaaraa festival at the Marianne River, Blanchisseuse on Trinidad's north coast June 8, 2014. Pilgrims all over the country and abroad have been gathering for the Hindu festival, also known as the oldest river festival, which commemorates the coming down of goddess Ganga to earth. REUTERS/Andrea De Silva (TRINIDAD AND TOBAGO - Tags: SOCIETY RELIGION)

A carved wooden "potz", a tool used to mix, floats on the milk while its curdling during the cheese making process at the Tsermon mountain pasture chalet in Gruyeres, western Switzerland, July 10, 2013. During the summer grazing season, starting mid-May to mid-October, the fifth generation Murith family produce a distinctive mountain pasture Gruyere cheese. Each wheel of cheese weighs between 25-40 kilograms, and takes a minimum of six months to mature. Some 200 wheels are produced each year from the unpasteurized milk from his herd of cows and sold locally. Picture taken July 10, 2013. REUTERS/Denis Balibouse (SWITZERLAND - Tags: AGRICULTURE SOCIETY FOOD)

Thousands of milk fish float in a cage after a massive fish kill at Taal Lake in Talisay, Batangas, south of Manila May 29, 2011. About 500 metric tons (500,000 kilos) of fish, worth more than 50 million pesos (U.S.$ 1.159 million) were seen floating in the water in the six towns of Batangas province the past two days, a local mayor said. A local town agriculturist said the cause of the fish kill was a sudden climate change in the area. REUTERS/Erik de Castro (PHILIPPINES - Tags: ENVIRONMENT BUSINESS)

Thousands of milk fish float in a cage after a massive fish kill at Taal Lake in Talisay, Batangas, south of Manila May 29, 2011. About 500 metric tons (500,000 kilos) of fish, worth more than 50 million pesos (U.S.$ 1.159 million) were seen floating in the water in the six towns of Batangas province the past two days, a local mayor said. A local town agriculturist said the cause of the fish kill was a sudden climate change in the area. REUTERS/Erik de Castro (PHILIPPINES - Tags: ENVIRONMENT ODDLY IMAGES OF THE DAY)

Milkman Tony Fowler, dressed in a suit resembling a cow, holds up his Member of the Order of the British Empire (MBE) medal after receiving it from Britain's Queen Elizabeth at Buckingham Palace in London June 9, 2010. Fowler, who has delivered milk for 19 years, was awarded the MBE for his assistance to local police with catching criminals in Leicestershire while on his milk float, reported local media. REUTERS/Johnny Green/Pool (BRITAIN - Tags: ANIMALS SOCIETY ROYALS IMAGES OF THE DAY)

A boy drinks milk as he sits on a rubber float at his flooded house at the Baleendah district in Bandung, capital of Indonesia's West Java province, February 21, 2010. Thousands of houses in the area were inundated by water due to overflow from the Citarum River and heavy rains. REUTERS/Beawiharta (INDONESIA - Tags: SOCIETY DISASTER)

A matchbox toy horse drawn milk float valued at 700 pounds ($1,230) is seen at Vectis in Thornaby, northern England September 10, 2008. The collection of matchbox cars owned by American collector Dr Scott D Gillogly is valued at nearly 570,000 pounds ($1 million) will be auctioned on September 16 and 17. REUTERS/Nigel Roddis (BRITAIN)

Veterans ride a float decorated with rattlesnake skin during the Rattlesnake Parade in Sweetwater, Texas, March 9, 2006. Sweetwater is home to the World's Largest Rattlesnake Round-up. Hunters round-up snakes and then bring them to the coliseum where they are measured, weighed, milked and skinned. REUTERS/Jessica Rinaldi