Trains in and out of London`s Euston station were canceled and delayed.
Several schools and train stations were hit by flash flooding as overnight thunderstorms brought a spell of hot weather to an end across southern England. Other trains were delayed after lightning struck a signal box.
Weather service the Met Office says Farnborough, south of London, got 32.8 mm (1.3 inches) of rain in three hours, half the monthly average for September.
More about: