Eye in the Sky hits the nail on the head.
If unsure of your position call D & D on 121.5, they'll find you quicker than anyone can and give you the best advice to resolve your navigational problems.
They will also take care of the phone calls to the atcos who's airspace you have inadvertently infringed, leaving you to do the important stuff, (unless it's Essex Radar's airspace - they will have had the laser guided missiles trained on you from the moment you entered CAS
).
I'm suprised that of all the experienced atcos who have responded only one mentioned D&D, they take a big weight off our shoulders in such situations and are highly trained to do so - let them get on with it!
