Language Not Same as Installation

That's good! I think your post there should prevent any further confusion. The other thing to mention here as well would be the guide for seeing a clean install without the need to upgrade first despite having already seen the initial upgrade take place. This should be a help in case a clean install fails to activate on it's own at this time having the GenuineTicket.xml already being kept in a safe place. Clean Install Windows 10 Directly without having to Upgrade First - Windows 10 Forums

PeterMayhew1914 said:

Used "Personalise" suggestion, found out have got English UK version..

It's a nice, fast and practical way to check it :).

Anyway, that means that you should use the English International language version for upgrades.

PeterMayhew1914 said:

Have saved new W10 licence key for clean install which might be needed just in case.

You never know! In most cases 10 will simply activate on it's own as soon as the fresh install connects online and goes for the updates if you opt to see those go on during the installation. When arriving at the desktop simply go into the Start>Settings>Update & security section and look under Activation. You should find it activated on the spot. If not however then you simply follow the guide there to copy and paste the xml file into the correct location.