Man of Honour
Proximity should be defined by how accessible it is though, not actual distance - that's irrelevant with high speed rail and efficient motorways.
Fair comment, but even so lots of big cities have major airports near them. Heathrow and Gatwick are technically easily accessible. London City is even better!
Stansted, Southend and Luton aren't accessible IMO. Yes better infrastructure would be good to these airports it would make them more accessible, but then you're just spreading the problem around no?