I absolutely love going to the whittard of Chelsea stores and always spend much more money inside than I intend to. There is such a massive range of teas, coffees and hot chocolates and unusual sets which make great gifts. In my usual shop there is always a section where you can sample some of the drinks that they sell. I particularly like their luxury hot chocolate. As there isnt a shop local to me it is always a treat when I am able to visit one . The staff are more than helpful and answer any queries nothing is too much of a problem to them.
Although the prices are a little higher than what you would pay in the supermarkets- it is important to remember that you are paying for the quality. Plus there is often an in store sales and a clearance section.