Mayor of London Boris Johnson will announce how many people in the capital are receiving The London Living Wage later today.
Hundreds of employers have signed up to the charter which sees businesses pay a wage based on the basic cost of living in the capital rather than minimum wage which is more than £2 an hour less.
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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.