I don't think it has been mentioned yet but a little bit of local knowledge helps and communicating with ATC, even if it is just to say "hello I am here..." makes everyones life that much easier AND safer.
ATC will accommodate your request if it is safe to so. Those that think it is fun to fly over an active military airfield at 3001ft on their QFE without so much as a "Hi" need to consider what actually flies in and out of that field. I wouldn't recommend doing this at the likes of Valley or Leeming where you are likely to encounter a Hawk conducting a PFL from above you, in the radar-blind overhead; that is just asking for trouble.
Don't be scared to talk to ATC, you might be pleasantly surprised/ shocked just how much is going on around you that is putting your little pink skin in harm's way:-)