Do these box's with airspace warnings take into account altitude when they give a warning?
One that I fly (G1000) is pretty well always saying "warning airspace within ten minutes". Guess whether I take any notice of these warnings.
Maybe this "feature" is designed for the American mid west, not the south east of England.
Also unhelpful is when it says "within airspace" when you're not inside anything that matters, or that you're interested in, or that you can find on the map.