After gaining a medicine degree in England I want to go over to america for training in pathology, what would I have to pass (apart from medical finals) and how would I go about training in america?

You would also have to pass the FMCG exam before you could do a residency. Don’t know how being a FMCG works with the "Match Day" system used to fill residencies in the US.

You might want to take a look at the websites of some training hospital you might be interested in, to see what their requirements are for FMCG’s. Or, do a search on "foreign medical college graduates" or "residency programs in pathology, US" or something like that. You may have to do a general medicine internship or residency before specializing in pathology – I don’t know. The website aamc.org may have info that would be helpful.