For those championing the train and how it will be the death knell for domestic flying - that won't happen until such time trains route direct from the cities to the hub airports. It doesn't matter how fast HS2 is from the north to London, no-one is going to lug their bags across London when they can just check their bags in at MAN / NCL / EDI / GLA and connect through the hub to a longhaul flight. Point to point domestic flying is not why BA (and in future VIrgin Connect) operate domestic flights.