Qualifications improve your chances; they do not gate the job. Level 6 is the most recognised.
Level 6 most recognisedOpen entry
Your route in
You can start without qualifications - direct entry/volunteering; a qualification improves your chances
1
Starting from scratch
Entry-level courses that feed this route.
- Level 3 Certificate for Retrofit Advisors L34 courses
2
Qualifications employers recognise (Level 6)
Any of these strengthens your application.
3
Add-on certificates
Complements to the main route. Where no level is shown, the awarding body does not specify one.