Met Office weather warnings are in place today for rain, and now thunderstorms are spreading across the South of England. Torrential rain, lightning and thunder have been recorded across London, Oxford and Chelmsford. Here are the latest weather updates, all times in BST.
4.14pm update: Lightning is striking across the south of England
According to LighntingMaps.org, lightning is striking across London, Chelmsford and Oxford.
There are also some patches just south of Norfolk.
3.48pm update: Met Office yellow weather warning
East Midlands, East of England, London and South East England, South West England, Wales, West Midlands.
The Met Office warns: “Heavy showers are expected to affect south Wales and southwest England on Tuesday morning then other parts of southern England during the day, peaking across the southeast during the afternoon.
“These will become slow-moving for a time with some very large rainfall totals possible in a few places.
“Whilst many places will see showers, the majority of places will see only relatively small rainfall accumulations.
“The highest rainfall accumulations are only likely to occur in a few spots where the showers become slow-moving, with 40-50 mm possible in only a couple of hours.
“Lightning and some hail may also prove additional hazards for one or two locations.
“The showers will clear from the west and the north later in the afternoon but persist in the southeast into the evening.”