The Met Office has issued a severe weather warning as the UK is bracing itself for thunderstorms.
The warning has been put in place for parts of south-east England as well as between Oxford and Middlesbrough.
Northern Ireland has already been issued with the warning.
There are also concerns of flooding, while lightning strikes could damage buildings.
Lightning could hit the UK later today WikiCommons
The Met Office has issued a yellow weather warning Met Office
The warning begins from 1pm today until 5pm the same day.
In a statement, the Met Office said: "During Monday afternoon thunderstorms are likely to develop over parts of Wales and the Midlands before moving northwards into northern England and develop over Northern Ireland.
"These are likely to bring some heavy rain to places with 20mm of rain possible in 1-2 hours but also the risk of hail and thunder.
"The thunderstorms will clear from the south during the afternoon then die out altogether into the evening."
During the storm, driving could be affected by rain and subsequent water on the road.
This could lead to longer journey times if using a car or bus, the Met Office added.
The Met Office issued a yellow weather warning, which means: "You should plan ahead thinking about possible travel delays, or the disruption of your day to day activities.
"The Met Office is monitoring the developing weather situation and Yellow means keep an eye on the latest forecast and be aware that the weather may change or worsen, leading to disruption of your plans in the next few days."