You can buy Norton Security Standard Subscription for 1 Device 1 Year which is on norton's website for £24.99. But with the use of the code : (NS1DUK15OFF) it will deduct £15 off bringing it down to £9.99.
This code is actually made available to use if you order this subscription from Quidco via a special link showing original price as £49.99. Then after using this code it will become £34.99.
However, I tried using this code on this item by going to norton's product page directly rather than via quidco to take advantage of this reduction and it works.
Note: Other quidco codes for norton other products don't work if we try to purchase them via the direct link to Norton's product page.
You can also cancel the auto renewal of this subscription instanstly after you complete the purchase. and the product will remain valid until the end of the 1 year.