It depends on the specific university or college you are applying to. Some universities may require that you have a certain level of science education, such as GCSE Science, as a prerequisite for their Mental Health Nursing program. However, other universities may not have this requirement.
It's recommended to check the entrance requirements for the Mental Health Nursing program at the specific universities you are considering. Some universities may require that you have a certain level of science education, such as GCSE Science. In some cases, even if GCSE Science is not a requirement, some universities may require you to have completed a certain number of science credits or to have completed a science-related course as part of your undergraduate degree.
It's important to note that even if GCSE Science is not a requirement for the program, having a strong foundation in science can be beneficial as mental health nursing programs typically include coursework in anatomy, physiology, and pharmacology, which are all sciences related.
It is also worth noting that some universities may have different entrance requirements for the different level of mental health nursing. For example, some universities may require GCSE science for the undergraduate degree, but not for the postgraduate degree, or vice versa.
In any case, it's important to check the specific entrance requirements of the university you are applying to, as well as any additional prerequisites that may be required in order to be eligible to apply for the mental health nursing degree.