There is precious little information about the degree level apprenticeship but here's what I've learned from my trust education memos so far: they start from September 2017, it is four years part time, you must have been working for the trust (not just the nhs) for 12 months when the course starts to be eligible, you keep your full salary while on the course, placements can be arranged with partnering trusts so you get a wide range of experience, and obviously you will have protected study time taken out of your shifts. There is also talk among the education team here that there will be a compulsory service period you must stay with the trust for after qualifying and if you leave within that time you will have to pay the course fees back, but this is currently missing from official documents.
Basically get a job in the nhs, even on the bank, asap if you want to go down this road, but explore all the options as this is very much a "wait and see when it launches" type of deal. Also bear in mind the details may be trust specific and most certainly subject to change.