Seven-year-old Alma Deutscher, who has composed her own opera, has become an internet sensation. The youngster became a star after videos of her playing her music were viewed more than 300,000 times after her father put them on YouTube.
The first major composition by the skilled composer, violinist and pianist was also given the thumbs up by the English National Opera.
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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.