Which role(s) ard you interested in? And what are your qualifications?
The education requirements are that GCSEs (or equivalent) are always needed, then the relevant A-levels (or equivalent) or a degree for non-specialist roles. For example, Personnel Training Officer can be GCSEs and A-levels or a 2:2 degree and GCSEs (or equivalent). Some jobs such as engineering, medical etc call for degrees in specific accredited subjects.