A package of building control, technical sections through 3 existing buildings

I have a 50% completed building control package for 6 flats in existing buildings in London. The plans and notes are complete. I need someone with good knowledge of insulation types, membranes, SAP in order to deliver a coordinated package of technical sections, including key building sections and wall specific details. To be produced on Autocad. Package to be complete by 25th October. I will have other larger packages coming up for new build projects and are looking to make an ongoing relationship with the right person.