Thank you for confirming. I just started reading a few pages back on this thread and noticed someone mention wire-shark, plus Sky hubs aren't meant to be all that. I have a spare TP Link router that did a decent job for range and throughput (bought it because our VM router at the time had terrible range). Could I use wire-shark to copy Sky details so I could use their router in modem mode and the TP Link router to do the rest?
Yes, but why not test with the Sky Router first? I had zero problems with it. Also check the TP Link has a VDSL modem as if it doesn't it won't work at all.