Don't expand Heathrow = Just watch the UK slide down the worlds economic ranks through lack of connectivity & trade.
Sums it up nicely - don't the most succesful businesses put the bulk of their resources behind their most succesful products to get the max out of them? - it works for economies too, investment in the south east can return a multiple on investment in the regions. The south east could survive without the regions but not vice versa (the Scots demonstrated their understanding of this a year ago) - the truth may hurt and we may not like it but it is still the truth.