From UK:

https://www.hrhiggins.co.uk/about/welcome/

http://www.northern-tea.com/default.asp

http://www.wilkinsonsofnorwich.com/Default.aspx

From India:

https://www.vahdamteas.com/

From China:

DragonTea House
https://www.aliexpress.com/store/726685

eLike Trading Co.
https://www.aliexpress.com/store/822008

Bonus Jam link:

http://www.tiptree.com/

These tea merchants offer top quality tea at sensible prices, and do not charge a fortune for postage. I have ordered from all of them.