Further detailed guidance on performing a risk assessment is in How to Construct a Public Sector Comparator (Treasury Taskforce, 1999), Technical Note 5[1]. Annex 4 of The Green Book (HM Treasury, 2003)[2] and the Quantitative Assessment User Guide (HM Treasury, 2004) also provide further guidance on quantifying and clarifying risks. The Orange Book (HM Treasury, 2004)[3] provides broader guidance on the principles of risk management that are valid and applicable across all modes.
[1] How to Construct a Public Sector Comparator Technical Note 5, HM Treasury, Treasury Taskforce (1999)
[2] The Green Book Supplementary Guidance on Optimism Bias, HM Treasury
http://www.hm-treasury.gov.uk/
[3] The Orange Book, Management of Risk - Principles and Concepts, HM Treasury (2004) http://www.hm-treasury.gov.uk.