The Ministry of Labour produced this guide for Pre-start Review requirements: PSR Document (.pdf)
With just a few details, we can advise what you need reviewed, and estimate the cost. We cover Regulations set out for operated and automated machinery (for safeguarding):
Or structures that are custom build, deteriorated, modified, un-certified. A few examples not covered by the OBC building code: Pallet racks, tool shelving, work tables, stand-alone mezzanines or catwalks.