Economic data
This supplementary guidance on the assessment of infrastructure spending provides further advice on applying Green Book appraisal principles to programmes and projects across the economic infrastructure sectors of:
This is not intended to provide comprehensive guidance on the project management of infrastructure investments. In addition, recognising that infrastructure projects take many years to develop and appraise, practical application of this guidance early after its introduction should be sensitive to the fact that many existing projects and programmes will already be a significant way through the policy appraisal and option selection process.