Jeremy Hunt has defended the latest figures, which show retails suffering an early drop in business as visitors stay away from central London during the Olympics.
The Culture Secretary told Daybreak: "It may be a bit up and down over the next few weeks, but in the years that follows, it's going to be terrific for London businesses.
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The report also said that many graduates do not even see a 'earnings premium' from their years at university.
The country's counter-terrorism forces have regained control of the facility.
The commissioner of the Metropolitan Police has said he cannot promise the public an attack will not take place.