As Britain prepares to bake yet again this week, Britain's famous faces have faced just the same battle as everybody else to keep their gardens just about alive.But one celeb is faring better than most – due to a quirk in hosepipe ban regulations, which some 27 million Britons are currently subject to.Chef Jamie Oliver's plush lawns are rather lusher than most, and the secret is easy to spot – a large personal lake just a stone's throw from the back of his Essex mansion.He has lived at the Grade I listed 12-bedroom property since purchasing it for £6million in 2019, and the pond sits within its 70-acre site. Mr Oliver, 51, is able to run hosepipes from the water feature to the rest of his garden, keeping it markedly greener than the surrounding parched countryside.While this summer is set to be the UK's hottest ever and 45 million people are now living in areas declared in drought, the chef has kept selective areas of his land a refreshing shade of green, encircled in brown fields.Under hosepipe bans, certain exemptions apply including to designate they can be used if the water is taken from a privately owned source.These might include lakes or ponds, as well as springs or wells on the property. Chef Jamie Oliver's plush lawns are rather lusher than most, and the secret it easy to spot - a large personal lake just a stone's throw from the back of his Essex mansion He has lived at the Grade I listed 12-bedroom property since purchasing it for £6million in 2019, and the pond sits within its 70-acre site Mr Oliver, 51, is able to run hosepipes from the water feature to the rest of his garden, keeping it markedly greener than the surrounding parched countrysideA long yellow pipe could be seen extending from Mr Oliver's garden to the pond behind in images taken this week. The TV chef is faring better than many, including Rolling Stones member Keith Richards, 82.The songwriter and guitarist's pad in West Sussex has a small garden encircled in buildings which is clearly being well cared for.But other grass on his estate is just as brown and dry as the surrounding fields.With no visible private water source, Mr Richards cannot rely on a handy nearby lake to get around restrictions, which came into place in the county on July 25.The legendary musician has owned the property for decades after initially persuading the retired naval officer owner to sell.Known as the Redlands Estate, the property would make headlines in 1967 after he and Mick Jagger were arrested there by police while high on drugs.These days it's a much quieter corner of the English countryside, surrounded by large trees offering some protection from the relentless summer heat. Keith Richards' pad in West Sussex has a small green garden at the centre, but other grass on the property is struggling With no visible private water source, Mr Richards cannot rely on a hand nearby lake to get around restrictions, which came into place in the county on July 25 Sir Rod Stewart’s Grade II-listed mansion has very green gardens despite the dry weather The property in Essex has an artificial football pitch with a 20-space car park Sir Rod's mini golf course features a fairway, two bunkers and a lush putting greenOne of the most successful gardening efforts this year has to go to Sir Rod Stewart, whose lawn betrays no hint it is even summer, let alone a record-breakingly hot and dry one. Aerial photographs show the land around the 81-year-old singer's 18th-century Grade II-listed property, which he bought for £4.65million in 2013, is still extremely green. His ten-bedroom home opens out on to a range of sprawling gardens and includes a mini golf course with a fairway, two bunkers and a lush putting green.There is also an artificial football pitch with a 20-space car park which Sir Rod had installed at the property before moving in with wife Penny Lancaster in 2016.Sir Rod's property is supplied by Affinity Water, which introduced a hosepipe ban across its central region, including Essex, on July 17 due to the weather conditions.Eight other water companies have brought in bans, which mean customers are legally banned from using hosepipes to water gardens or wash cars, patios or boats.There is no evidence Sir Rod has breached a ban, given there are many workarounds for watering grass such as using a watering can. He may also have an exemption such as that used by Mr Oliver.Drought has been declared for all of Wales and almost three-quarters of England – and a sixth heatwave of the year is on the way this week with 38C (100F) highs. It was confirmed on Tuesday that the UK is on course for its hottest summer ever – with only average conditions needed for the rest of August to beat a record set only last year.The mean temperature for the summer so far, from June 1 to yesterday, stands at 16.48C – which is 1.88C above the 1991 to 2020 average, provisional data shows.