@metrouk: London could be hotter than parts of Spain this week. The red warning means 'extreme heat' and covers all of London, much of the south east, the Midlands, West Country and parts of Wales. Forecasters are warning that temperatures in the capital could soar towards 40°C as a major heatwave grips the UK, with the Met Office issuing rare extreme heat warnings and warning of potentially record-breaking conditions. Experts say the hottest days are expected in the middle of the week, with tropical nights making it difficult to cool down even after sunset. #heatwave #london #londonweather #ukweather