The Met Office have issued a weather warning for thunderstorms and heavy rain which they warn will cause more disruption.
A week on from flash floods bringing parts of the UK to a standstill, another yellow warning has been put in place.
It covers much of the east of England, as well as some parts of the south coast, stretching from Cambridge and Norwich down over London to Portsmouth and Brighton.
The warning is in place from midnight tonight until 3pm on Thursday, it has been announced.
Flooding is "likely", with loss of power and damage to buildings also possible, Brits have been warned.
The Met Office say: "There is a good chance driving conditions will be affected by spray, standing water and/or hail, leading to longer journey times by car and bus.
"Delays to train services are possible and some short term loss of power and other services is likely.
"Possibly some damage to a few buildings and structures from lightning strikes is possible and some flooding of a few homes and businesses likely - leading to some damage to buildings or structures."
They advise Brits to take care when travelling and whilst the storm is marked towards "very likely" to happen the impact is ranked towards the bottom end of the scale.
The early hours of Thursday morning are likely to see outbreaks of heavy and thundery rain across east and southeast England.
The Met Office predict that most places will see 10-20mm of rain but some could see upwards of 60mm or more over the six hours of thunderstorm.
They warned that: "lightning will be an additional hazard" and "the area of rain is expected to ease from the southwest before clearing into the North Sea during Thursday afternoon."
The thunderstorm follows a tumultuous few months for the UK's weather that has seen storms, floods, wildfires, droughts and more.
Last month the UK saw its hottest ever day as temperatures pushed beyond 40C as England suffered its driest July on record.
This was followed in a matter of weeks by a second heatwave and then much of the country then saw downpours and thunderstorms.
However, in the face of some midweek storms, the country could also be set for a scorching bank holiday weekend.
Forecasters have predicted most will see a sunny end to August with temperatures pushing the high 20s.
Regions and local authorities affected:
East Midlands
- Lincolnshire
East of England
- Bedford
- Cambridgeshire
- Central Bedfordshire
- Essex
- Hertfordshire
- Luton
- Norfolk
- Peterborough
- Southend-on-Sea
- Suffolk
- Thurrock
London & South East England
- Bracknell Forest
- Brighton and Hove
- Buckinghamshire
- East Sussex
- Greater London
- Hampshire
- Kent
- Medway
- Portsmouth
- Slough
- Surrey
- West Sussex
- Windsor and Maidenhead
- Wokingham
