I’m not convinced that the move to LHR is such good news. Ok, if you want a long haul connection it’s better than LGW, but if you want to get to a mainland europe destination easyJet’s LGW network is huge, and goes to most of the business destinations served by LHR in addition to a vast number of leisure destinations, but will generally be cheaper. As for getting into central London, LGW trains to Blackfriars or Victoria beat the heathrow express on getting you to the city, lawyers or Westminster, both on price and time. Crossrail won’t be much better unless you want to go shopping.