More than seven million Brits are now under a hosepipe ban as the nation swelters in what could be its longest heatwave on record and temperatures soar to 36C today.The UK is stuck in its third heatwave of the year with scorching conditions leading to early harvests as well as wider impacts on health, energy, wildfire risks and transport.Anglian Water became the latest water firm to announce restrictions this morning, placing five million customers across eastern England under a ban from tomorrow.It comes hours after Cambridge Water announced a ban for the first time in three decades yesterday for its 350,000 customers which will come into force on July 17.The first ban of summer was introduced by South East Water for 850,000 customers in Kent last Friday; while a Southern Water ban for one million people in Hampshire and the Isle of Wight was activated this morning after being announced last week.Thames Water has urged its 16million customers including those in Greater London to stop using hosepipes during the heatwave but has not imposed an official ban.Officials fear the risk of drought conditions in some parts of the UK is now becoming increasingly likely. Authorities are keeping a close watch on East Anglia, Devon and Cornwall as water companies scramble to manage increasingly tight resources.Meanwhile another record tumbled yesterday when the UK had its eighth day at or above 34C in a calendar year, breaking the previous high of seven days set in the summers of 1976 and 2020. A ninth day of 34C-plus heat is expected today.Rail passengers faced ongoing disruption today due to the heat across the UK network as East Midlands Railway (EMR) continued its 'essential travel only' warning. Rowers on the River Thames near Maidenhead in Berkshire during the morning heat today A beautiful sunrise over Glastonbury Tor in Somerset today as the heatwave continues