NVQ Level 6

NVQ Level 6 is one of the most highly respected qualifications in the construction sector. The UK Government introduced the NVQ as a vocational equivalent to academic qualifications. Most importantly, main attraction of the NVQ is that rather than learning afresh, you gain your qualification by compiling a portfolio of your achievements at work.
https://www.theccm.co.uk/courses-page/nvq-level-6-construction-site-management/