I just moved to Spain from the US. My favorite go-to vendor there was Upton Tea. I know it's not particularly highly regarded here, but I really enjoyed its selection of loose black teas.
Is there a similar (or better) vendor in the EU or the UK? I've been told to check out Whittard but I'm not terribly impressed with the selection from glancing at their web site.
Comprehensive member driven guide to vendors of all teas