Can I get one thing straight?
Is the notam problem discussed here evident when using the real (ais.org.uk or whatever it now redirects you to) website?
This kind of thing is why I have never used the graphing tools myself. Relevant notams can appear more or less anywhere. Last year I got a military exercise off Romania shows under RAC - just 3 lines among about 3000. Yet those 3 lines (had I spotted them) contained information on a route that would have avoided the exercise while still being IFR flight plan acceptable.