I also have a tin biscuit barrel and a few other tea tins that I need to use more often that I think were made by the Metal Box Company for Daher of New York. I haven't found anything like The Potteries for tea and biscuit tins.
For new teaware, I'm a fan of the modern English-made Chatsford mug infusers -- they are nothing fancy, just brown plastic, but are well-designed for their purpose. I like the idea of a Teasmade, but have heard from everyone who has ever used one that they are tacky and more trouble than they are worth.

(Maybe it doesn't count as teaware since there is a kettle subsection, but I also have an old Simplex copper kettle that I really like the look of but haven't been using because it needs to be re-tinned.)
Any other English teaware fans out there?