5 3 2 4
Heathrow Airport Luton Airport Stansted Airport Gatwick Airport
Luton Gatwick Stansted Heathrow
Cambs Beds Bucks Herts
M4 M2 M1 M3
2 million 1 million 500 000 1.5 million
16.5 million 4.5 million 8.5 million 1.5 million
London City Gatwick Luton Stansted