Please don't take my posting of this deal as any indication that I endorse the use of Norton in any way whatsoever. I will point out now (hopefully to stop a tirade along these lines) that Norton WILL hog resources on your PC, it ISN'T particularly good, and there ARE better free recommended alternatives e.g. Avast, Avira, AVG...if you're interested in those instead, which you should be, Google is your friend.
However, in the spirit of the site, I am posting this deal as I think it is a very good price for those who do choose to use Norton and may be looking for a cheap renewal.
Oh, and if you do buy it, the cashback rate is better at TCB (5%) than Quidco.