I like Barry's Tea imported from Ireland. I love strong brisk tea and this is perfect. They have a few different black teas but my favorite is the Barry's Gold. I buy it at Wegman's in the international food section. They also have a website.
I also like the black tea from Harrod's of London. My sister always brings some back for me when she travels there.
One thing I discovered is the difference of the tea in the bags. I cut open a few of the American tea bags and the leaves were crushed and almost powdery. When I cut open the Barry's or Typhoo the leaves were more intact. It made the American tea look like sweepings off the floor.