I just noticed this when I was logging on to my TPF credit card.

Special offer on internet security

If you have internet access on your computer, you should have adequate security software in place to make sure you're protected when you go online. To give you peace of mind, the latest Norton Internet 360 All-in-One Security software offers all you need to stay safe online.
We'll give you an exclusive 50% off the current price when you buy at Tesco.com using your Tesco Credit Card before 31 December 2008.
Just use eCouponwhen you buy using your Tesco Credit Card online at www.tesco.com.

This makes it £29.98. I have blanked out the eCoupon and will post it on the Tesco codes.

Hope this helps.

Check for discount codes to use at direct.tesco.com