Going through STN early December a rather loud female security officer was shouting repeatedly that they didn't give out free bags anymore and that any liquids found not in a bag would be destroyed. The only solution was to exit the queue, get scanned back out then buy a bag (oh you do get three of them in a the pack!) for £1 from a machine that looked rather like an old fashioned bubble gum dispenser. All because I forgot that the little jar of handcream I bought landside counted as liquids.
Then back in the queue for another 25 minutes - my own error but altogether hardly customer friendly.