The Prime Minister has unveiled a £15.5 million funding package to support innovative firms today, pledging to "make Britain the best place in the world in which to start and grow a business".
World-class technology experts will be given fast-tracked visas under a push to attract the best international talent to the United Kingdom's digital sector.
During a visit to Tech City, Britain's answer to Silicon Valley in East London today, Mr Cameron outlined plans for the Government to open up the exceptional talent visa route - usually reserved for international leaders in science and the arts - from April next year.
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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.