The Old Bailey has been told that a woman who attacked two strangers with a knife, had killed her mother six years before.
Nicola Edgington is now on trial accused of murdering one woman, and attempting to murder another in Bexleyheath on 20-11.
Paul Brand reports.
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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.