The country has been baked this week with the heatwave generating record-breaking temperatures for the year.
The mercury reached 35C at Heathrow on Thursday making it the hottest day of the year but temperatures could near 37C on Friday with experts claiming the record of the hottest day ever of 38.5C could be reached.
The scorching period will be halted for some as “severe thunderstorms” crash into the country.
On the Met Office weather map, temperatures in the southeast of the country near 37C.
The map also outlined where thunderstorms were likely to hit throughout the day.
The Met Office has issued a yellow weather warning for thunderstorms from 2pm on Friday until 23.45pm.
The national weather service warned “flooding of homes and businesses could happen quickly” the weather system hits.
The weather warning is in place for the East Midlands, east of England, London, southeast England, northeast England, northwest England and Yorkshire and Humber.
A Met Office statement adds: “There is the potential for thunderstorms to develop during Friday afternoon, lasting well into the evening and perhaps developing into a larger area of rain.
“Where the thunderstorms occur torrential downpours are possible with as much as 30mm of rainfall in 1 hour and 60 mm in 3 hours.
“Large hail and strong, gusty winds will be additional hazards. However, many places will see much lower rainfall amounts.”
The Met Office also claimed the UK could be hit by the hottest day ever on record on Friday beating 38.5C, set in Faversham in Kent in 2003.
Spokesman Grahame Madge said: “Friday looks like being the hottest day of the year so far with temperatures expected to widely reach the mid to high-30Cs.
“We are likely to see the hottest July temperature ever recorded and at this stage, it is possible we could break the national record for the highest ever temperature.
“There are going to be some thunderstorms developing and when these arrive will determine if and when we might see the record broken as they will hinder heat reaching the ground.
“It will be slightly fresher at the weekend with some more wind and rain across western regions as a low-pressure system comes in off the Atlantic.
“However the heat will build again next week and temperatures are expected to rise back into the 30Cs.”
Bookmaker Coral has even slashed odds on next month to become the hottest August on record to 5-4.
“The end of July is going to be sweltering and it with no hint of the never-ending summer slowing up we have been left with no choice but to slash our odds on the hottest August of all time,” said Coral’s Harry Aitkenhead.