Look at number of UCAS points for a dental nurce apprenticeship and how UCAC points work for access couses. Also contect individual universities, but they will not know what the policy will be in a few years time.
For example Essex universities says "A GDC recognised Dental Nursing qualification plus a minimum of two years experience from either pre-or post qualification employment plus A-level Biology grade C" (or equivalent)
The UK RAF/Navy/Army also pays well for dental nurses including while they are training you. Many of their dental nurses become dental practice managers etc.