A 'be aware' warning for rain has been issued by the Met Office and will be in force from 4pm to 11.55pm tomorrow, 
The Met Office said: "Thundery showers are expected to push north across southern parts of the UK through Tuesday evening, perhaps turning more widespread towards midnight. 
"Although many places won't see these showers, there is a chance of localised flooding of homes, businesses and susceptible roads. 
"Frequent lightning may be an additional hazard with potential disruption to power networks."