On the subject of avoiding gliding and para drop sites, two points if I may;
1. “It's not hard for heaven's sake, they are all on the charts . . .”
They are on the official CAA/NATS ¼ and 1/2 million charts, but not all are on the new 1 million, and at least some were not on Jeppesen when an airprox report included as a reason that the pilot was flying with J. which did not show a gliding site . The pilot just missed a launch cable, IIRC.
2. “If it was a soaking wet day or the wind was 40kts at 1000ft or if the vis was low and cloudbase 1000ft I wouldn't consider for one second contacting Errol before flying over them, whether I was talking to Dundee or not, they're not flying.”
I know this was referring to para drops, and for all I know the poster’s judgement may be identical to that of the site operator. But again, I recall an airprox report where a power pilot just missed a gliding launch cable, because he thought they would not be flying with a 1000 foot cloudbase so he did not divert to miss their site. Our judgement of others’ minima, and/or our knowledge of other people’s aviation practices, may not be as good as we think.
Just my 2p’th.
Chris N