Thanks. I've not done an upgrade, only routine updates. I guess that my original suspicions about the Broadband hit were right, though.

Thanks Joergi. That folder isn't hidden on my system but is 6.15Gb. Does it have other stuff normally that isn't part of Win10?
I note the folder date matches the one the download seems to have...

Hi
I registered for Win 10 and then cancelled. Last week, there was a large (3GB or so) hit on my Broadband allowance, which seems to roughly coincide with the size of Win 10. How can I see whether...