Andy, I didn't say they don't come with correct Afcads. For EHAM in particular, they all need to have the new designations in there, so 18's and 36's. For them to work with the updated approaches I linked you to.
As for EGCC, that's a whole nother story, again, redesignations, so one would need an approach file, but correct behavior cannot be replicated in one Afcad, you need two, one for the NE direction and one for the SW direction.
Good use of good Afcads (and approach files) can make a big difference. Unfortunately, it does require some knowledge and a bit of work.