There is much recent debate about extending the purposes of investor-owned firms to embrace the wider interests of a variety of stakeholders. Network regulatory decisions already involve extensive use of centralised social cost-benefit analysis to capture some aspects of public value. A gap...

This paper evaluates the impact of the tightening in price cap by OFWAT and of other operational factors on the efficiency of water and sewerage companies in England and Wales using a mixture of data envelopment analysis and stochastic frontier analysis. Previous empirical results suggest that...