Qualifications improve your chances; they do not gate the job. Level 2 is the most recognised.
Level 2 most recognisedOpen entry
Your route in
You can start without qualifications - direct entry/volunteering; a qualification improves your chances
1
Qualifications employers recognise (Level 2)
Any of these strengthens your application.
2
Where this can take you
Direct entry with no formal qualifications (GCSEs in English and maths preferred); the recognised route is a Level 2 administration apprenticeship progressing to the Level 3 Business Administrator.