Thanks I got the PM and if he can do anything outside in the pot/pit and cabinet then fine but I am not having anyone in my home at this moment in time for any reason.
I already spoke to an engineer I met and out and about he agrees that 99% the time it is outside where the issue is.
As I said this issue appeared same time as the road/pavement/water mains work outside (ongoing) and really hot weather, nothing in my home has changed, everything was replaced just after the HUB4 was set up after/due to that strange call I got about network noise that turned out to be nonsense (you can probably see it on my account).
Right now I am Locked on to 31 Downstream channels and 4 Upstream channels so not sure why you are seeing that, numbers look ok be it we do not have exact figures or the HUB4.