In reply to Scarab:
I got out on Torpantau in the Becon Beacons, back in 2013. Did Ironclaws as well. That was it until 2018 when i did Torpantau again, in thawing conditions.
So yes, the odd thing can be done but in the current climate, I think you need to be headed towards Scotland, Norway or the Alps. And even they aren't as reliable as they used to be.