Spanner, don't know you but assume to are local to me i.e. at the bottom end of the corridor.
I have to admit that a few years ago I did fly a microlight under a road bridge
I notice that our friend at Ashcroft is still having his dispute with Lancashire Aero Club although the LAC website seems to have disappeared.
My flying nowadays is more concerned with large scale models, not to be trusted actually sitting in a flying machine nowadays.
When I was flying microlights in the early 2000's I was astonished by the slack attitude of some of the other microlight and powered parachute flyers I came across - one reason that I changed to type A in the GA world.
Of course I assume that things are a lot better nowadays, maybe even some of them carry radio's!
FF