Transport for London is promising to make major improvements to the transport system to help disabled passengers. Among the measures being taken are making more Tube and train stations step-free and making bus stops more accessible.
The Deputy Mayor for Transport Isabel Dedring said many disabled passengers need more advice and information on what facilities are available.
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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.