Fire crews are continuing to battle a blaze on Arthur's Seat in Edinburgh as tinderbox Britain reckons with the fury of the latest 'firewave'.More than 250 wildfires and grass fires have broken out across the country in the last two weeks thanks to bone-dry conditions.In Scotland's capital, at least six fire appliances were sent to Arthur's Seat, the large extinct volcano that overlooks the city, at 6.38pm on Sunday night.Emergency crews remain at the scene today, with locals advised to keep windows and doors closed. Queen's Drive, which encircles the beloved hillside, has been closed to traffic.It comes as a further two million people will be subject to a hosepipe ban.South East Water said 2.4 million customers will be affected by temporary restrictions in Sussex, Surrey, Hampshire and Berkshire from Saturday.But the firm is asking customers to cut back water use straight away, telling them not to use hosepipes for their gardens, cars, patios, boats or swimming pools.The ban had previously been in place just for its customers in Kent. South East Water said it has seen a 'decline in river levels' and needs to 'protect some groundwater sources' after lower than average rainfall, hot weather and high demand for water.A fire broke out at Arthur's Seat in Edinburgh overnight (pictured), with several fire engines dispatched to tackle the flames Fire crews remain on the scene today and are likely to remain there until later this week to dampen down the smouldering scrubland Fire crews are also continuing to tackle a blaze at Glenmore in Scotland's Cairngorms National ParkIn Edinburgh, images from this morning showed much of the hillside had been scorched bare by the flames overnight, while fire crews are continuing to dampen down smouldering pockets of scrubland.Jon Henderson, of the Scottish Fire and Rescue Service, told BBC Radio Scotland that crews will likely remain on scene for several days.'The feeling from the ground there is that we will probably be there for a couple of days continuing to tackle it and dampen out hotspots,' he said. Hosepipe bans across the UK this summer Anglian Water: Hosepipe ban for five million customers across eastern England in placeAffinity Water: Hosepipe ban across central area, covering Bedfordshire, Buckinghamshire, Essex, Berkshire, Hertfordshire, Surrey and parts of London in place. Company has a total of 3.9million customers.Southern Water: Hosepipe ban for one million people in Hampshire and the Isle of Wight in placeSouth East Water: Hosepipe ban for 850,000 people in Kent in place. Extended to 2.4million people across Sussex, Surrey, Hampshire and Berkshire from Saturday.Cambridge Water: Hosepipe ban for its 350,000 customers in place. 'Our focus at the moment is dealing with the fire and the response but there will be a full fire investigation.'The difficulty we have with wildfires is that they can be difficult to assess where they started because of the scale and sometimes these do happen naturally.'In the Cairngorms, emergency services have been battling a wildfire since Wednesday that they have been able to 'surround' as they battle to contain its spread.Homeowners have been evacuated over the course of five days as the blaze has decimated grassland at Glenmore, in the heart of the national park.Gavin Miles, of the Cairngorms National Park Authority, called the fire's containment 'very encouraging', though stressed that crews remain on the ground today, assisted by firefighting helicopters.Elsewhere, a huge firefighting operation remains underway on Tintwistle Moor near Glossop, where Derbyshire Fire and Rescue Service has been tackling a major moorland fire since 24 June.The blaze has affected around 260 hectares (642 acres) of land, and crews are likely to remain on the moor into later this week.At Rustic Stomp country music festival near Wareham, Dorset, some 43,000 square feet of heathland was destroyed in a blaze caused after a camping stove set fire to a tent.Dorset fire chiefs warned campers against using stoves, open fires and barbeques while 'conditions are so dry'. A firefighting helicopter uses a bucket of water to tackle a wildfire in the Cairngorms in Scotland over the weekend A dramatic image released by Derbyshire Mountain Rescue Team shows the impact of the wildfires on Tintwistle Moor near GlossopPromoter Jason Galaz said on social media: 'Big respects to the Wareham Fire Crew and to the community for an instant response. No one was hurt. Everyone got lucky, but it could have been a different story.'Don't cook in dry fields. Don't throw cigarettes. I don't know yet what happened, but don't do dumb s***.'It comes as temperatures continue to remain relatively high across Britain despite the easing of the third heatwave this year.In all, the country has sweated its way through 28 days of temperatures above 30C so far in 2026, with more expected to come.Experts have warned that the country's heatwaves are now perfect brewing conditions for wildfires as the climate breaches the so-called '30-30-30' rule: air temperatures over 30C, humidity below 30 per cent, and 30kmh (18mph) winds.A lack of rainfall - more than two weeks without a drop in central and south-east England - is turning fields and forests into prime kindling that could go up with the aid of an errant cigarette or barbecue ember.The National Fire Chiefs Council (NFCC) has urged people to avoid using disposable barbecues where possible, discard cigarettes safely, and take litter home.A spokesperson said at the weekend: 'Most wildfires are preventable... by making simple, responsible choices.'Next week, the Met Office says rain will reach some northern parts of the country but there are signs of high pressure that would signal a return to hot, dry conditions in the south.