Hundreds of Schools in London are closed as teachers join other public sector workers for a national strike. The action has been hailed as the biggest strike over pay to hit the Government since it came to power in 2010.
Home helps, lollipop men and women, refuse collectors, librarians, dinner ladies, parks attendants, council road safety officers, caretakers and cleaners are among those striking alongside teachers, firefighters, civil servants and transport workers.
Hundreds of administrative workers at Transport for London were also on strike in a row over pay and pensions.
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The high of 35C was recorded on a Bakerloo line train between Piccadilly Circus and Oxford Circus at 2pm.
Weather forecasters say temperatures could reach 35C, beating the previous record of 34.6C in the scorching summer of 1976.
After years of political manoeuvring over the future expansion of Heathrow Airport, there has been an important development this lunchtime.