This is simple.. ring upj Npower on 0800 197 3958
Say you are ringing about the free test series tshirt.. they will ask you for a code.
quote N108D. This reffers to The Times on the 17th if you are asked.
Offer closes on 31st August.
I just rang up.. he says my quote will be in the post in 5days (like i care!) and my tshirt will take up to 3 weeks..