Thanks all - via the power of the intermeweb, my insurer's website (a popular bike insurer whose name rhymes with Barrel Crash
) specifically states that policyholders do NOT need to inform them about awareness courses. So that's good.
Just have to wait for the letter now, to see if they do offer me a course.
The experience will teach me to be more cautious around Blaenau Ffestiniog, that much is certain ...