Boris Johnson is calling on the Government to build a new airport in the Thames Estuary.
The London Britannia Airport (Boris Island) includes four floating runways tethered to the sea bed.
Dismissed as a vanity project by opponents, Boris Johnson remains committed to a new hub airport in the Thames Estuary as a way of easing pressure on Heathrow.
In fine bombastic Boris style he described himself as an aeronautical Bill Cash, unable to let go until he had changed the status quo.
The Mayor of London challenged the Prime Minister today over his demotion of Justine Greening and vowed to fight any expansion to Heathrow.
Jeremy Hunt and Chris Grayling landed promotions as David Cameron sparked minor controversy in reordering his Cabinet for the first time.