Britain 's heatwave sends ice creams sales soaring - with some vendors seeing a 400 per cent rise in sales . Temperatures forecast to hit 21C tomorrow , with the country set to be warmer than Ibiza , Athens and Barcelona . But the balmy conditions could be coming to an end , with clouds , wind and a spot of rain forecast for Thursday . The Met Office said that temperatures will drop by up to 5C, but warned people not to panic as it is likely only to last until Friday or Saturday.
Britain 's heatwave sends ice creams sales soaring - with some vendors seeing a 400 per cent rise in sales . Temperatures forecast to hit 21C tomorrow , with the country set to be warmer than Ibiza , Athens and Barcelona . But the balmy conditions could be coming to an end , with clouds , wind and a spot of rain forecast for Thursday . Showers predicted to hit London on Sunday as tens of thousands of runners take part in the London Marathon .