Trial a magazine from Magazine Group (they had 3 trial issues for £1) but going through quidco get £4.80 so £3.80 profit and so far for me it has tracked. Not that confusing i will list the offers i found on a quick look on the site below
Also the week is prices as 6 FREE Trial issues on there website but i didn't want to risk this as it was quite lightly that it wouldn't track as no money was spent?
Health and Fitness
Woman and Home
I think there are others but i dont want to search, Also don't forget to cancel your direct debits once you are payed or after the trial period. Do correct me if this wont work (though it seems too)