Waitrose Food magazine is free if you have a MyWaitrose card, or £1.20 if not.
I noticed in a local store today that it comes with a packet of Ricola sugar-free sweets. There seem to be three flavours available: elderflower, lemon mint and liquorice. Not sure if every store has the free-sweets version of the magazine. But could be worth a look while you're in there?
You can order a MyWaitrose card fromhttp://www.waitrose.com/content/waitrose/en/home/mywaitrose/mywaitrose_welcome.html
(But it would probably arrive after the magazine is sold out.)