Hips - Capital Adventures
Mmm, rosehips! They make lovely tea (pick them at their ripest and dry them, then steep them in hot water when you want tea). They also make a really good syrup -- rosehip syrup was often given to babies and small children in the same manner as Ribena and for the same reason, namely that it's packed full of vitamin C.
Heh. Unfortunately these are at the Botanic Gardens. They get a bit irritable if you start picking the plants.
Oh, darn. I hope you can find some privately-owned ones!