You should be a qualified health care professional currently working in an appropriate area of practice. 

Applicants will normally need a degree in a health-related discipline. Applicants with evidence of professional development or academic proficiency equivalent to level 6 (degree level) study will be considered but will first need to meet with the admissions tutor, Aileen Wilson, to discuss their application. Applicants with no previous level 6 study, or equivalent, will be required to complete a level 6 bridging module.                                                           

If you have non-UK academic qualifications you will need to supply evidence of comparability. The organisation ECCTIS will supply this for a reasonable fee https://www.enic.org.uk/Qualifications/SOC/Default.aspx.

You should also have current professional registration (e.g NMC, HCPC etc) and be employed as a health care professional in an appropriate setting.