NSI companies operate at either a Silver or Gold level. Silver companies have been audited against the applicable industry standards and have demonstrated that they operate in line with industry best practice.
Gold companies meet all the criteria of the Silver scheme but have invested in the extra step of demonstrating that they have implemented and operate a full ISO9001 management system.
NSI is the leading industry certification body for our chosen industry sectors. As such we have a wide selection of local, regional and national companies that you may consider in choosing your contractor.
You can search on our website for a full list of approved companies within your area or nationally to see who operate to either scheme.