ok, not THAT tea party..

The recent big tea party on the bench made me curious... what is a very good British tea that is available in the US? Less known but superb would be even better. I don't drink much tea, but I know someone who loves tea... thought I might surprise her with some for christmas.

ETA: doesn't have to be British, European, Australian, anything not as common as in US is good. Forgot to say *fancy* tea, or *unusual* tea the better! Please also include where I can find them. THANKS!