The Met Office has warned of disruption including power cuts, flooding, and train and bus cancellations.
Three yellow weather warnings are in place on Monday between midday and 21:00 BST, covering Wales, parts of England, and the west of Northern Ireland.
Easyjet cancelled over 50 flights to and from Gatwick Airport on both Sunday and Monday, affecting over 15,000 passengers.
BA also cancelled a few flights at Gatwick and Heathrow on Sunday and Monday.
Monday will remain very warm and very wet, with the possibility of a month's worth of rain falling.
The UK Health Security Agency has issued an amber alert for high temperatures in the West Midlands, East Midlands, east of England, South East, and South West.
LONDON DAILY ARCHIVE
Flights Canceled Amid Weather Warnings for Rain and Thunderstorms in UK
Flights have been cancelled due to weather warnings for rain and thunderstorms in force across the UK.
12 June 2023 · 14:13 UTC
