Hi plodr,
Thanks for the link - the advice there tallies with that I've seen elsewhere.
Yes, KB2952664 is optional and was unchecked. I have hidden it - I don't like this dirty tricks campaign of Microsoft and the deceitful way they describe updates like KB2952664 so that its real purpose is unclear to the average user. Don't they realise that a Windows 7 user who has not upgraded to Windows 10 at this stage is unlikely to do so now. Perhaps they want to drive us to Linux when Windows 7 support finishes.
I would have considered Windows 10 if I needed to buy a new system and peripherals but the more I hear about Microsoft's activities and the problems some Windows 10 users are having with updates, the less likely I will go that route. When support for Windows 7 finishes, if my present system is still viable, I will consider dual booting with a Linux operating system and disable the internet on Windows 7. I have done something similar on my old Windows XP system with a dual boot setup with Linux Puppy Precise (frugal installation) and that works well allowing me to continue to use some peripherals that won't work with later Windows operating systems