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
Enter with no formal qualifications as a labourer/mate and gain a Level 2 operative apprenticeship plus a CSCS card; the exact trade depends on sector.
Courses for this career
Level 2
Level 3