Due to Metropolitan's existing relationship with the client, we had an excellent understanding of the existing electrical infrastructure. From this knowledge, we produced a phased testing plan, which allowed us to safely test 100% of the installation over 5 years, inclusive of all critical data suites and specialist areas. We completed 20% of the installation each year, informing the client of any unsatisfactory reports and observations. Remedial action was taken on any non-conformance's, with status change letters provided for the associated test certification. During the 5 year period, we also completed full HV/LV servicing & maintenance on all critical & non-critical plant, with any observations being remediated. Upon completion of each stage of the testing we provided new schematics, removing client logos for the new tenant, all test certificates, non-conformances and status change letters, full HV/LV service and maintenance reports, and new circuit charts were installed for the tested equipment. All information was uploaded to our 'Infinity' and 'Dutiful' platforms for easy client access and future management, with a hard copy handover pack being provided for each completed building summarising our works.