Depending on your proposal, there are a number of technical reports and supporting documents which may be needed to validate your application as set out in our full validation checklist for all application types:
Full Validation List - All Application Types
PDF, 500.96 KB, 28 pages
You can access further guidance on some common requirements and documents on these pages.
You can read more information on key documents you must include with your application to avoid delays in processing your application in validation requirements and see validation lists for different types of application here.