Non-native speaker here, but I’m trying my best.

I’m interested in trade with Iron Age Britain, specifically Southern Britain an Wales during the Iron Age. I’m particularly interested in the 4th century BC (second half of the century, one decade before Alexander the Great’s conquest). My focus is on the trading practices of the Clans Silures and Regini, if it is possible to narrow it down.

Trade with Gaul – I’m under the impression that (Southern) Briton tribes traded with (Northern) Gallic tribes. How often and during which season would such trades occur? What language would be used while trading?

Germanic tribes – Those do not seem particularly influental in trade with the British Isles at that point in time. Can you share some insight?

Greek Trade – I’m under the impression that during this time, the British Isles weren’t on Greek Maps (quite literally), but Celtic burial objects of that era show amphorae of Greek wine and pottery. Were these traded by third parties? Given that these were burial objects, were these considered luxury goods? Is it reasonable to assume that the common citizen of any Greek city state would be wholly unaware of the existence of the British Isles, or am I underestimating Greek curiosity/education/trading practices?

Likewise, would Britons enjoying Greek wine be aware of Greek culture?

Phoenician Trade – Here’s the point where I’m getting conflicting statements from different sources. Ìt was my understanding that Phoenicians traded with the British Isles (if so, how often?) for tin. But that could be wrong. If there was any trade at all, which language would be used for communication?

Chicken – the earliest chicken bones can be found at this point in time. Who would have traded chicken?

Import – Greek wine and pottery, Etruscan Bronze kraters, silver, amber – is that correct? Were these all considered luxury goods? What else of note was imported?

Export – Mostly Slaves, gold, salt, tin, ironworks and wool. Is that list complete or even correct?