Downpours and flooding have swamped parts of London and the south-east. London Fire Brigade received hundreds of calls of weather-related incidents, including some reports of flooding and lightning strikes. There were delays and cancellations across the Tube network as Transport for London grappled to bring floodwaters under control.
There are fears the heavy rain and flooding could discourage voters from heading to polling stations for the EU referendum. Keep up to date with the latest EU referendum news on our live blog.
News photographers have filed some great pictures, and Twitter has been awash with photos and videos of the deluge, using the hashtag #flooding.
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