Isn't poppy straw completely legal in the UK tho Bleaney?
There used to be a guy selling pods with a union jack on his website who was clearly selling them for poppy tea he had his "favourite turkish gigs - direct from our goatherder and so good that I bought him a new pair of sandals for all his efforts"
Yeah it looks like you may be correct.
However, obviously it becomes illegal if you extract the alkaloids from that straw and process them into opium or heroin.
But what about all the scenarios in between?
What about if the straw is sold for it's high alkaloid content with seller knowing the buyers intend to extract those alkaloids? Either by making a tea, or some more advanced processing.
Why don't these online pod retailers stay in business for very long?
Those sellers advertising their pods as being great for making 'special brews' etc or anything even more explicit about high alklaoids for strong brews, are surely skating on very thin ice, legally?
How can dried poppy pods, without the stems, be sold for "arts and crafts"? That seems ridiculous to me, as it's pretty difficult to do dried flower arranging with no stems to work with?

Would that consitute a legal case?
What if the pods have next to no alkaloids? As in the ornamental varieties.
Making a tea out of home grown or purchased pods would also be incredibly difficult for LE to charge anyone for, I'd imagine. As you'd have to be caught in the act of making the brew and drinking it?
So many questions and ambiguities though. (I'm not expecting you to have all the answers, but many of these questions are puzzling me.)
Things seem much more straight forward in terms of growing. You can legally grow any strain but it's illegal to extract the raw opium. Simple. I think it may even be illegal to grow with the intent of doing that. But unless you had opium stained razor blades or something like that, intent could never be proved?