In Japan and China when pouring tea for someone that is important it must be done in a way that follows certain guidelines and rules, becoming and almost elaborate piece of art in itself. On the other hand Tea was imported culturally from China/India and then largely from India which leads to the question, how much of Chinese, Japanese and Indian tea culture permeate the new and evolving English tea culture?
It was actually the British who brought their tea culture to India. Before the 20th century, tea in India was not a recreational drink, and was only used medicinally. The British had acquired a taste for tea in their interactions with China and began planting tea plants in India to break the Chinese monopoly on tea. In the 19th and early 20th centuries, tea was only a drink for Indians who had thoroughly engrossed themselves in British culture. Tea really only became a drink for the masses in the 1950s.
In was in the 50s, that the Tea Board of India was facing problems handling an oversupply of tea. Their solution was to kickstart an advertising campaign to promote tea drinking. Ingeniously, their ads advocated the very British idea that tea was inseparable from milk, like how Nabsico promotes Oreos with milk. Milk was a common drink in North India, so urging people to mix in a little tea was the next logical step. It was a winning combination, and the campaign was wildly successful. India is currently the second largest producer of tea in the world.
Colleen T. Sen's Food Culture in India is my source.
Another interesting fact is that the Indian word for tea, chai, comes from the Persian chay which in turn comes from the Mandarin cha. The phrase "chai tea" that you often see marketed in the West is in reality redundant.
Having sat through Japanese Tea Ceremony?
Fairly little at the level of ceremony. What you refer to can be easily reinterpreted with different lenses- while there is certainly some level of ceremony to be respected when, say, a manservant or a butler pours tea for their master, it is in the subtext of the master / servant relationship rather than "this is tea, we do something special / unique with tea" as you see in Japan. Although then, the relationship of the woman (or man) performing the tea ceremony, and whomever they're serving can be seen as the master / servant thing too and....well this is pretty multifaceted, isn't it?
Obviously tea didn't / doesn't grow in Western Europe normally so there's that. Someone who actually follows pottery art / manufacturing history could elaborate as to whether the import of tea brought about a luxury market / luxury market boom for ornate, quality china, but the upper class owning finer things- including dinnerware and pottery- wasn't exactly new.
May help to refine and focus your query a bit. At the very least it's foolish to try and lump all of China and all of India and all of Japan into the same dough.
No part of English tea culture derives from Japanese tea ceremony. There's no such thing as an Indian tea ceremony, and it's debatable whether there's any such thing as a Chinese tea ceremony either.
I think you may be conflating tea ceremony (the Japanese way of tea) with tea culture, but nevertheless, if you're talking about the British middle and upper class tradition of afternoon tea which developed in the mid 1800s, there's no relationship I can see with the tea cultures of China, India, or Japan.