Please note:
- BA own a % of FlyBE who are the region's biggest carrier
- BA has engineering bases at LHR, LGW, GLA, MAN and BRS
- Citiflyer are based in Manchester
- I'm sure there are more influences around the country
And don't forget they still provide millions of seats to London and onwards from the regions!
In the UK, no other airline has a similar influence - I guarantee it.