Boris Johnson has defended his idea of building an island in the Thames Estuary, saying that a third runway at Heathrow would be "obsolete" by the time it was built.
He added that today's report made plain that advocates of this solution were effectively calling for a four-runway Heathrow, which he said would be "environmentally and politically undeliverable".
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The Met Police says 143 firearms have been handed in at stations across the capital in just seven days, including two antique machine guns.
The pair filmed themselves clinging on as the train travelled from Essex to London at high speed.