A mass will be held at Westminster Cathedral today for the nurse who was found dead after being duped by a prank call from two Australian radio DJs.
Mother-of-two Jacintha Saldanha was found hanging in her nurses' quarters at King Edward VII's Hospital in Paddington by a colleague and a security guard last Friday.
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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.