I used to live in Moreton, about a 5 mins walk from the old Cadbury/Typhoo factory. Just an old memory from my youth.......Interesting tea trivia.
I’ve been in the Tetlys factory with a former employer, and when yarning to one of the production managers, he stated the best tea went in the bulk catering bags, the sweeping ups went into the retail 1 cups.
So I guess the middle ground are the retail standard bags.
Cheers Tom