Sales of paddling pools rocket, while last-minute holidays collapse Unfortunately my personal conclusion is that it will probably last as long as the heat wave does, and rather than delaying the booking decision, it may be simply removing customers from the market. While holiday companies struggle, Currys and PC World have reported that sales of juicers are up 2422 per cent on last year, with sales of fans and air coolers up 340 per cent on last week. John Lewis also said that sales of juicers were up 1886 per cent and hats have seen a 449 per cent increase. Punt chauffeurs enjoy the summer sunshine as they take a break between trips on the River Cam in Cambridge (PA) It comes as parts of Britain are expected to get even hotter over the next 24 hours, with Wednesday forecast to be the hottest day of the year so far. The country has enjoyed eleven days of unbroken sunshine, and with the mercury expected to reach 32C today, it is hotter than temperatures forecast for Kingston in Jamaica, Venice and Athens. Andrew Sibley, a forecaster at the Met Office, said: "Most of England and Wales will be hot and sunny today. We are forecasting temperatures of 30C to 31C in London, and it could be the hottest day of the year so far. The rest of the week will be pretty much the same for many of us. On Wednesday there will be further bits of rain across western Scotland and Northern Ireland, but otherwise England and Wales will have a lovely day. Temperatures should get up to 31C or 32C in London. Saturday saw the hottest day of the year so far, with temperatures reaching 31.4C. The warmer weather led to chaos for commuters as part of the M25 had to be closed because the asphalt on the road surface melted, and on Sunday rails buckled in the heat at Waterloo causing disruption on the trains. Forecasters say the scorching weather could last at least another two weeks, which would be Britain's longest period of hot weather since 2006, when the country enjoyed 16 days of consecutive sunshine. As the hot weather continues, the public have been warned to look out for the elderly and not leave children in parked cars. Public Health England also warned people to turn off "non-essential" lights and electrical items such as computers as they generate heat. It advises people keep out of the sun between 11am and 3pm and wear loose cotton clothing, sunglasses and a hat.