Qualifications improve your chances; they do not gate the job. Level 4 is the most recognised.
Level 4 most recognisedOpen entry
Your route in
Employers typically expect around L2
1
Qualifications employers recognise (Level 4)
Any of these strengthens your application.
2
Where this can take you
Often entered from a project support/admin role with experience; the recognised qualification is the Level 4 Associate Project Manager (or APM PMQ), progressing to a Level 6 project manager.