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Heart Breakfast with Jamie Theakston and Amanda Holden 6:30am - 10am
25 July 2019, 11:23
Doesn't feel like it could get much hotter in Sussex and Surrey but today it just might.
Faversham in Kent set the UK record back in August 2003 of 38.5C but later, forecasters say it's likely the South East could hit 39.
The Met Office says that would most probably be somewhere between London and Cambridge.
Network Rail says we ideally shouldn't take the train today.
But if we do services between Brighton, Gatwick and London could be forced to slow down to 20mph to stop the tracks buckling.
GTR which runs Southern, Thameslink and the Gatwick Express is among the rail firms saying it takes safety very seriously.