Paxboy
Your local airport is LHR , for the rest of UK it is not. Hence the drop in BA passengers and drop in shuttle flights. BA will claim its rail etc. Frankly it’s not, it’s just the rest of the country has learned to miss BA and LHR. We use ME3 , KLM, LH etc, no brainer as we will still have to change somewhere and LHR has more issues than others.
Cheers
Mr Mac