Thank you for the quick response. I ran "Storage sense" and free space doubled to around 4GB which is very OK for this device; I note that LCU records about the same as earlier. This device doesn't have a "restore point" so if it's running OK a few days after an update would deleting the LC seem like a fairly safe step? Sometimes with the paging file in use available data has shrunk to <1GB so even a few hundred extra MB is welcome. There appears little scope for further reductions elsewhere although I haven't compressed the C drive as the device is already rather slow; I presume that would release a few hundred MB's.
@ Des.ca and D.Charner
It's not a violation of the Code of Conduct https://answers.microsoft.com/en-us/page/faq#faqCodeConduct to have and use two accounts here, but it's a bad idea to post to the same thread with both. If you are getting help from an Independent Advisor, as you are, that person will only see posts from the original poster. They won't see posts from the other profile.
In the case of this thread, John J.D. won't see the reply from D.Charner
Don