England players Steven Caulker (l), Alex Oxlade Chamberlain (c) and Jermain Defoe (r) hold portraits of Arthur Pember, Ebenezer Cobb Morley and Charles William Alcock, three of the eight 'founding fathers' of football who created the rules of the game 150 years ago.
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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.