Hi, I'm new to this site but have had good experiences with Windows Eight Forums and I expect it will continue in Windows 10.
I post this in the hope it may help others who have the same problem.
Allowing the auto-update was getting me nowhere and appeared to be stuck. After 24 hours of 'Failed Update' notices I used the Media Creation Tool (As advised in Tutorials - thank you) it took only some 30 minutes to download the Upgrade (using a 14Mg download). The actual installation took 59 minutes.
I must say that my first impression is very good indeed and at the moment I'm just slowly finding my way through the changes.
Hopefully this may help someone and they too have the same good result.
Thank you.