On the King Power website they have three statements and three CCTV extracts in connection to the British case, an Irish case and a Malaysian case. It's interesting how the store security are able to clearly identify the suspects and see that they definitely put items into their bags/pockets as the footage is at best hazy, and at worst not clear. It does appear in one or two of the cases that there is suspicion around whether the item was taken or not.
I suppose the easiest thing to do is to not visit duty free, or if want to cross the threshold, don't take your hands out of your pockets!