h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Pickwicks Tea & Coffee House, and Merchants. 82 Church Street, Tewkesbury.

See inside the shop: http://www.tewkesbury.net/businesses/direntry.asp?ShopID=130 and click on the LPIX thingy above the picture

This is a tea shop- as you go in you go through the shop part and into the tea house at the back, where you are presented with a list of around 60 teas & coffees for you to try. (Listed on their pricelist here: http://www.tmgcon.com/pickwicks/ )
The proprietor (sorry, I don't know his name) is charming, he really *knows* about tea.

One of the blends they sell is called Caravan China. It was originally blended my Mr Whittard of Whittard's tea shops, and Whittards used to sell it. However, as they expanded they stopped providing it for the general public - they only made it for places like Pickwicks, and then they phased it out altogether. However, the proprietor of Pickwicks asked one of the tasters for Whittards if he could have the blend, and was given it, 'cause the taster was pleased at the idea of one of Mr Whittard's original blends still being sold.
Pickwicks is the only place you can get this, I believe its a blend of Rosepetal, Gunpowder, Jasmine, Ceylon, Lapsang & Oomjong. It tastes sort of smokey, I really liked it.

As well as being able to try their teas, they also sell them, and an amazing array of teapots, too.