A runway is a runway. Wherever you stick it, it's going to be able to accommodate roughly the same amount of traffic.
So how does a new runway at Gatwick have double the capacity of one at Heathrow? If that were actually the case, the Airports Commission's decision ought to have been a no-brainer.
Because adding an extra strip of tarmac doesn't increase airspace available. Airspace is the biggest issue, Heathrow is surrounded on all sides and there's no room for additional routings in and out of the TMA. Gatwick doesn't have this issue.
That aside, I'd imagine a new runway at Heathrow will come with restrictions, whether it be limited operating hours or a movement cap.
Vokes55 I'm curious to know if you would gain financially if the second runway at LGW went ahead?
Enlighten me, how do you think I'd gain financially if the second runway at LGW went ahead?