The number of people in work in London has increased by 100,000, suggesting a big jobs boost from the Olympics.
Unemployment within the UK is now at its lowest level for a year, standing at 2.56 million.
In the three months to June, the number of people in work nationwide increased by 201,000, with half that rise coming in London.
More top news
Industrial vacuum cleaners and magnetic wands will be used each night during the summer to remove metal particles, dust, oil and grease.
Detective Superintendent Fiona McCormack said the Hotpoint FF175BP model had not been subject to any product recall.
Security for this year's event on July 8 has been reviewed following a spate of terror attacks in the capital.