The roof of a house in south-west London has been badly damaged by a "big red ball of lightning" following heavy storms.
A neighbour witness described a ball of fire that was said to have caused an explosion "like a bomb going off".
Fire investigation teams are now at the scene, ITV News' Jim Dutton reports.
Viewers have posted dramatic pictures of the storms which ravaged the UK last night. The photos were posted on the ITV News Facebook page.
It seems thousands of people were woken up by loud claps of thunder, seemingly constant flashes of lightning and torrential rain.
Britain is set to bask in the sunshine in the next few days with health officials issuing guidance on how to stay safe in the sunshine.