Apprenticeships, Skills, Children and Learning Bill

The House has accepted a definition of an apprenticeship which includes a mixture of on and off-the-job learning, and we have heard the example of a community which goes across the Welsh border to a hospital in Wales. What happens if those same people in that hospital do their off-the-job learning in England and their on-the-job learning in Wales, or vice versa? The subsection says "wholly or mainly", but does the certificate have to emanate from the authority in which the greater amount of time is taken, or is there some other criterion? I think there will be real cases like this; we are not just talking hypothetically.