Is it possible to buy sarsaparilla and dandelion and burdock in Sheffield?

heeley farm sell sarsapariila ready made in 250ml bottles. its made by Free Trade ltd. think they do dandelion & burdock too will have a look on my way to pick little locket up from school.

they do dandelion & burdock too. its made by fentimans. www.fentimans.com.
& it tastes lovely