I think that you may find that most of us came from different service industries. Myself included.
I think that that is a good thing as they bring in ideas that the NHS need as they have been too long in their Cocoon.
As for the accreditation for prior knowledge, this definately has to be addressed.
This should all be on your training record held in your bosses/education department smile. The problem we have are with some manufacturers in that they have a caveat on their training that it is only valid for the Hospital that you were employed with when training was conducted.
Records of training should be held locally but also freely available for others (with your permission) to look at and transferable between sites.