Thanks for all you input everyone. I have purchased a Netgear nighthawk router and put the hub 3 in modem mode ( purple led) and it works like a dream. I didn't need to spoof the hub 3 Mac address either.
Bandwidth is still pretty variable so I will keep an eye on that, lots of throttling at peak times.
I am disappointed that my COD points per match averages haven't improved but at least I'm able to play a full match.