A massively oversized beef spit.
In Western Europe a Doner is seasoned minced pork and lamb added to the spit in patties, with the occasional patties of pork and lamb fat (like lard) to keep it succulent.
Where they originate from is Turkey and the Middle-East and is often old sheep and goat meat (Halal obviously!).
That's donna meat a mix of pork and lamb combined with spices.
No. That is "Doner". A Turkish meal and there is no pork in it.