Have to disagree about Norwich which is usually mentioned (not that im biased
) but i doubt it's going anywhere, gentle increasing in pax numbers after years of decline, thriving matainance hangers, , aircraft recycling, about to build a 5 bay state of the art aircraft painting facility, based private/corporate jet company with own recently built hangar/centre, plus gas flights and even bigger is an aviation business park for the future
Now that is how a small airport diversifies to stay alive!
Others small airports need to do the same if they are to survive in the future, as I agree if your airport is within 2 hours of a larger airport and solely relies on pax as its main income, the future looks bleak unless they act now!