Kent’s summer getaway is expected to get underway today as the school holidays begin for thousands of families. With some classrooms in the county now starting to close for the six-week break, more vehicles are expected on the roads this weekend. Alongside people escaping on holiday, the hot and sunny weather – after record amounts of rain – is also likely to encourage more people into their cars for a day trip or visit to family and friends. A yellow heat health warning has been issued for Kent, which is in place until 11pm Saturday night, with temperatures expected to skyrocket towards the 3…