Every 3rd service is a major one, so this one will be a minor one.

With regards to the paint warranty, have a look in the book. Even if it's not a Ford dealer who did the actual service last time, they are still entitled to put a stamp in the book for the service and should have done so, but have a check to see if there's anything stamped in the section for the paint check as well as that's a seperate section.