In this brave new world of globalization, aviation is the main channel for business. And just as business is a competition, so is travel. If the UK is not prepared to offer a competitive product to the world of international business then the UK will not compete.
The current crop of political half wits which constitutes recent UK governments simply does not appreciate this fact. Not only are these political brain voids confident that stifling Heathrow's expansion is a whiz idea, they think that airline passengers have a bottomless pocket full of cash dedicated to splashing out on air travel; hence the relentless increase APD.
By expanding Heathrow you are minimizing the rate of marginal environmental disturbance. There is already an airport there with lots of aircraft movements. By opening a 3rd runway there will be more aircraft movements, but only a marginal % increase.
Open a new airbase in the middle of the Thames Estuary and you go from 0 to 100% disturbance overnight. Oh and don't think that opening Boris Island will shut Heathrow. LHR's owners won't want to see £billions of investment go down the tubes just because a bunch of political numpties believes it's a good idea to clog up a perfectly serviceable river estuary with a pointless airport.
An airport which apart from irrevocably damaging the river's ecosystem, and it's wildlife population, will need a huge and local workforce to service it. From whence might they come ? I know! They can commute from where they currently live in Hounslow, adding more and more sooty carbon footprints to the surface of the planet, whilst reducing the size of their monthly disposable incomes.
And on to the hoary old subject of hs2, anyone who thinks a fast rail link to London will boost the economies of Great Northern Towns will need to pause for a re-thought. It will simply increase the range of commutable travel to London and encourage more business to re-locate to the capital.
Best off keeping the slow coach to the north or our friends in Manchester and Leeds will find the nice 15minute walk to work, transform overnight into a gloriously expensive commute on a high speed train, which incidentally, has the carbon footprint of an asteroid smash, but no one will own up to that inconvenient truth.
Businesses already
did relocate to London, increasing the commuting radius from London simply allows people on lower paid jobs in London to afford housing further from the capital and thus at lower cost.
Essentially it aims to erase the north-south divide by expanding the "South" to include the "North", which in my opinion is the only viable option.
As for the carbon footprint, if we were to embrace sanity and start a crash nuclear newbuild programme the carbon footprint would be the same as the carbon footprint for a Paris-Lyon commute, which is to say effectively zero.
As for the noise disruption, if you were to build an airport in the Thames Estuary and do so properly, say at Shivering Sands, you would cause effectively no noise pollution to any populated areas as both the approach and take off corridors would be entirely over the sea.
As for the "destroys ecosystems" argument, the same could be said for any form of land reclamation project ever, the area reclaimed would not be that extreme, additionally at Shivering Sand you are far from the borders of the ecosystem so the area is relatively barren.
And as for the "It wont close Heathrow" argument, it would atleast allow the termination of all nighttime flying at Heathrow and frankly if Parliament were to vote to direct the CAA to withdraw Heathrow's operating licence there is absolutely nothing BAA could do about it, especially if Parliament were to use the "blights the lives of nearby residents" argument should it go to court in the EU.
Additionally if the UK was to embrace sanity and start spamming nuclear newbuild everywhere possible, the commute from Hounslow to the Shivering Sand facility would be on an electrically powered train in all likelyhood and would thus have the same carbon footprint as the HS train journey.... that is to say zero.
(And yes, I believe that any reasonable Thames Estuary airport should be out at Shivering Sand where it is well clear of anyone, its not that much more expensive and additionally has reduced ecological effects)