A good airport to do stuff at is a fairly rural one with a long perimeter fence and easy road access.
If you believe the marketing then East Midlands Airport is the second busiest freight airport in the UK.
It is rural, midway between Leicester, Derby & Nottingham, with a huge perimeter, and operates 24 hours a day. The road network is not dense, but the current mud bath that is the construction of a massive freight interchange would seem to give good cover.
If you wanted to disrupt economic activity then EMA would seem to be an easy target, plus they might well disrupt road traffic on the M1 / M42 as a free bonus.
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