Free zoo or aquarium ticket!! We are also giving away tickets for FREE admission to 40 zoos and aquariums when accompanied by a full paying adult.
Tickets are printed on a wide range of our cereal packs - keep an eye for them and pounce on the chance for a great day out! Then plan your trip by finding the nearest zoo to you with our Zoo Finder.
I found this on Kelloggs Cornflakes but it says on the website wide range so it will be others.
It has most of the big places and could save you a few quid over the year if you stock up on enough, the expiry is early 2009 on the voucher. Also includes some safari parks as well.