White dead-nettle (Lamium album) has hairy, toothed leaves like all nettles I know of. It doesn’t sting, unlike other nettles.
The dead-nettle leaves in the photo are the small ones around the flower. The big leaves in the photo are from a different plant.
If you were to carefully pull off one of the white flowers and suck gently on the tubular opening at the base of the flower, you’ll enjoy a puff of a sweet aromatic taste.
Photograph Works 
Wow David, White Dead-Nettle is not only tasty, but good for so many things! Oh, and I think the “other plant” might be Comfrey? Also a very old Herbal… 😉
More on Lamium album
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I am not sure about the comfrey leaves. They are a bit big and broad compared to the ones I used to grow in my vegetable garden to use as a compost activator. That was years ago when I was a member of the Henry Doubleday Research Association (named after a 19th Century Quaker smallholder who brought comfrey to Britain). I just googled it and it is now called Garden Organic.
But there are varieties of comfrey, so it could be. I will look out for it when it flowers next year, and report back!
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lol, if it weren’t already well after dark, I’d go and snip off a piece of Yellow Archangel to compare with the Comfrey growing beside the Glaze Shed… (I’ll try to remember to do that tomorrow)
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Sorry David, totally forgot… And, as of Wednesday overnight into Thursday, everything’s been covered in several cm’s of snow! (Far, FAR too soon for this:/)
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NORMAL Daily temps for this time of year are +8>-1°C…
Twas -6° at 0:4:15 this morning! Currently 0° w/ windchill of -13°C
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