Thanks i have BT Cloud which comes with my broadband provider and when i click on "get info" in finder it tells me it is using 100gb of space, i'm new to this cloud and how they work i thought you put files in there to release space but all the files i have put in are taking up space do you think i have to sync the files then i can delete them from the folder.
So if you "Get Info" in Finder on an item that is purgeable space it will say that in the Get Info window. Thus if it just says 100GB used it doesn't seem to count towards the purgeable.
I have no idea about BT's cloud offering's. I can tell you however how it works with iCloud Drive and Google Drive.
Here's a file which is stored in my iCloud. It's an audio file I made but that's not so important.
See the little cloud icon with an arrow in it? That indicates that the file is currently stored *only* in iCloud and not on my local machine. If I right click/option click on it, I have this option
Once clicked, the file exists both on my computer, *and* iCloud and the little cloud icon goes away.
If I delete the file it will be removed from *both* my computer *and* iCloud. However, if I again right click/option click, the menu now has this option
Which will remove it only from my computer and keep it in iCloud.
On Google Drive the process is much the same though things may be named slightly differently. Options are also in the right click menu but further down in the menu, with Google Drive icons next to them (at least last I used it).
I can't say it's the same for BT, but you can try and check if the behaviour is the same.