When I went to bed last night the snow was still several inches thick everywhere but, as was forecast, over night the rain came down and this morning all the snow was melted.
Including most of my snow man:
Anyway, the exciting part is that I have been out to check on my little seedlings and they (appear) to have survived that icy blast just fine.
So there you have it, the cloches seem to have done their job (and one seedling survived even without a cloche). I think I may start another set of each of these off in the next month or so, just see about timings. My feeling at the moment is yes, they have survived, but no they are not far enough along to have justified the expense of cloching them over.
To round this update off, I have pictures of my inside plants.
So there you are, the snow does not appear to have killed my outdoor plants, and my indoor ones are going very well indeed.
I hope you enjoyed my update.