Conservatives on the London Assembly are investigating ways to put a freeze on rising tube fares.
Amongst other ideas, they have come up a plan to allow tube stations to be sponsored.
Could we soon be seeing Brand Beckham at Victoria, and Russell Hobbs at Russell Square? Tom Barton has been to investigate.
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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.