Boris Johnson has announced a £1.5 billion project to develop the 50 acre site in Silvertown Quays in a scheme that could create up to 9,000 jobs.
The area has been undeveloped for decades but the developers behind the scheme The Silvertown Partnership say London has seen the regeneration of a number of sites across East London such as nearby Canary Wharf and Straford.
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The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Police have arrested a man wanted in connection with a burglary at the home of pensioner Richard Osborn-Brooks.
The rally comes after it emerged that the Home Office destroyed thousands of landing cards documenting the arrival of windrush-era migrants