The south and south east will continue to bask in sunshine and soaring temperatures today as the heatwave shows no sign of abating, forecasters said.
The country experienced the hottest day of the year so far yesterday, with the mercury hitting 32.2C (90F).
Temperatures are expected to hit 30C (86F) again today, according to the Press Association.
A level three heat health watch has been put in place with the elderly and young, and those with chronic health conditions, urged to take extra care.
Forecasters have said Britain is in the midst of its first prolonged heatwave since 2006, with six consecutive days of temperatures above 30C (86F).
And it is set to continue into next week, with temperatures in the high 20s at the weekend before rising to 30C and above next week - bringing with it an increased risk of thunderstorms.
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Network Rail has reopened two of the four lines but two will remain closed for the rest of the day.
Tuesday afternoon's weather for the west of the region
Tuesday afternoon's weather for the east of the region