Dilapidations Protocol: 2008 version (Property Litigation Association).
A pre-action protocol for claims for damages in relation to the physical state of commercial property at the termination of a tenancy.
This document is in pdf format and make take some time to download.
http://www.pla.org.uk/__data/assets/pdf_file/0006/59577/Pre-Action_Dilapidations_Protocol.pdf