There have been new calls for urgent action to improve one of east London's main cycling routes, following the death of a 20-year-old student last weekend - the first to be killed on a Boris bike.
Protesters from the London Cycling Campaign are riding from Tower Hill to Aldgate tonight to highlight their fears that Superhighway 2 is too dangerous.
More top news
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.