1. National

Britain's hottest day since 2006

Temperatures have reached 33.5 celsius at Heathrow - not only making today the hottest of the year, but also the hottest day since 2006.

View all 127 updates ›

Children 'should go home' if classroom temperatures soar

Children should be sent home from school if temperatures in classrooms soar, teachers' leaders have suggested.

Unions have called for a maximum temperature limit to be introduced, which would allow staff and children to be sent home if the heat becomes too much.

Chris Keates, general secretary of the NASUWT teaching union said said excessive temperatures are a "major problem" for schools, which are ill-equipped to cope.

"Pupils become extremely lethargic, unable to concentrate and in some cases faint.

"Lessons are disrupted by constant requests for time out to get drinks of water or to go outside and many tasks take far longer to perform."

More on this story