In English they are called Sub from “submarine sandwich”, based on traditional Italian style sandwiches that are the same as Bocatas. That is also where Subway restaurants get their name.

But yes, the issue is that nor in Germany nor England have the “normal” bread, which they call Baguette.

The closest thing I would say for Germans is a Brötchen, which in Spanish would be like a panecillo. What you are seeing in the picture is a Bratwurst Brötchen