Apparently due to the local setup various not very nice people have been using that route to get drugs into the country using microlights. They go feet dry between Blackpool and Liverpool and disappear off towards the manch low level corridor to land who knows where.
I presume as usual a few have managed to muck things up for the law abiding majority.
The information about the drug runners was given to me by a local pilot when I had a close encounter with an untracable microlight.