It's not for the Davies Commission, or the government, to decide where the hubs are. Those days are over!
It's the airlines who decide (a) whether to operate a hub (e.g. BA and VS at LHR) or a base (e.g. U2 at LGW), and (b) where the hub or base should be located.
Then you had better get your submission to Davies in PDQ, you could save us taxpayers a lot of money.
"The Commission will examine the scale and timing of any requirement for additional capacity to maintain the UK’s position as Europe's most important aviation hub"