I think that’s a pity. I still love the old Carry on series and their stereotypes,
The tea market here has moved on in the decade or so since you were here. Now the tea (and, for that matter, coffee) shelves in even the ordinary chain supermarkets look like a wine merchants - named organic single estate specialities from a particular hill in Sri Lanka, etc etc. There is now even tea grown in Cornwall - small quantities, high price.
Actually the tea plant (related to Camellia) is a temperate zone shrub - it can only be grown in India, Ceylon etc in the wet temperate uplands. The Brits started growing it there because it needs lots of land and labour - both in plentiful supply.