Quote: "Heathrow was a dinosaur by the '70s. No room to expand,rubbish infrastructure,approaches over the City at low altitude. The bullet needs to be bitten.Boris Island,incorporating a tidal barrier and improved transport links Kent to East Anglian? Bin Heathrow now, it will have to be done eventually,sooner the cheaper."
Maybe, but it was the dinosaur, and remains the airport, that airlines and pax favour. Why do you think it runs at 99+% capacity and why do you think airlines pay millions for LHR slots?
Please return to the real world, there is no prospect of "binning" Heathrow.