Answers in sequence
1. Ilford use a very large machine to cut, mark, spool and pack their 35mm films - they bough it from one of the old Agfa factories a few years back. This machine does the whole thing, including exposing the edges to light through stencils that "writes" the bar code and other details on 35mm film. before this, they had large machines that looked like cine projectors (without any projection lens) that did the same job, but on a much smaller scale. And the 120 is cut, marked and spooled on a thing that looks like an old industrial loom with the films zooming up and down in the dark - lettering etc is written on it the same way - light through stencils.
2. Well I'm blowed.
