A few usb dvb sticks have been around recently. But, from Tesco and a decent model it seems.
Little bit of uncertainty about exactly which Hauppauge model this is. In the picture it's the Nova-T. Under features, it refers to it as the WinTV HVR 900. That is a much higher model that often retails around the £50 mark. I believe the higher model has both an digital and an analogue tuner. It's still a very good price for the lower model if it turns out to be that one.