So to confirm, you're not on wifi (or wifi is off) and your computer is plugged directly into the hub? If so, do you use powerline adapters anywhere in your home? Perhaps feeding a wifi access point or something?
Powerline adapters are the only thing I can see causing your problem. If the neighbours use them too, you could be picking up traffic from their network. And if their sky router uses the same 192.168.0.1/24 subnet, that will explain why you get the sky routers page.
I've seen it before where the electrical wiring has been a bit shoddy and there's crosstalk causing the home plugs to connect to each other between houses.
Sounds like your computer is using a VPN, or even there Is malware running your connection through a Sky customer proxy. Even a simple http web proxy could see this. Tell us what OS you have and we can suggest how to check, it looks like Chrome is your browser - is that the only one you use?
That's what it looks like to me.
Not sure if Tor exit points would show the same thing. They shouldn't, but eh.... OP should know if they are using TOR and the issues it brings.
---- I do not work for VM, but I would. It is just a Job. Most things I say I make up and sometimes it's useful, don't be mean if it's wrong. I would also make websites for them, because the job never seems to require the website to work.
Just found this whilst googling. Had some issues connecting to game servers tonight, rebooted the 'Sky' hub, and noticed upon restart that I had a dozen more devices connected to the router, refreshed the page again, took me to a Virgin Hub 3, asking me to login. Reported this to Sky as I also had virtually no Internet. Seems close to a data breach, given I could see 'somebody's Virgin hub, devices and IP addresses etc, on my wired network. Sky didn't see overly bothered, which is standard.