[co]Incidentally, I got connected to Virgin Media today and after initial hiccup, I'm now connected.
Cable modems tends to allow connection from one MAC address. If you connected the Superhub2 to your laptop prior to connecting to pfSense box, most probably Virgin still got your previous MAC registered. First of all, you need to setup DHCP, as almabes said. Then, connect the Superhub to LAN port and switch-off the hub. Wait for a min or so and then switch on the the hub - that will refresh the MAC address. Best!