It's time to add a second runway and forget about the expensive Heathrow
By all means add a second runway at Gatters but understand that LGW's growth is driven by easyJet and Norwegian, both loco leisure. LHR serves a slightly different market in connecting UK business to the world, something Crawley Intl has never succesfully managed to come close to in the same way. BA are also a leisure holiday airline at Gatwick, very different business model than LHR.