I don't live in the UK, but I did my work to found that the Speedtouch 330 is a PURE MODEM, with USB connectivity. It's NOT a router and have NO WiFi capability.
Before I went cable, I had a Alcatel Speed Touch Home modem. It connect using an ethernet cable, not USB. Another PURE modem, also without any WiFi capability.
Next, domestic routers have a web like interface that can be accessed using any browser. If your "router" can't be accessed that way, then it's probably not a router, or a special professional router that is NOT meant to be used at home.
The Belkin N wireless modem router IS 802.11n compliant.
Electro, August 2012