There is a lot of debate about Heathrow expansion – however cheaper options are not really evaluated thoroughly. I like the view of London while landing (plus located nearby) – hence I will always support Heathrow. However the best option is to expand LGW to a 2 runways airport and transfer all long haul flight to LGW. Heathrow shall handle only European flight. For connecting passengers there shall be a very fast train link between LGW and LHR. With modern technology, time to cover this distance by train could be same as transfer bus ride from T1/T3/T4 to T5. Converting LGW should be achived witin 5 billion and with that competitivness of London could be maintained, no 3rd runway at LHR will be required and future growth would still be possible.