This report examines equity investment in privately financed projects in the UK. It finds that equity investors have helped deliver many infrastructure projects, but there may be inefficiencies in how equity is priced. While investors bear some risks, especially early on, many risks are passed on and returns have often exceeded expectations. The report analyzes three projects and finds a portion of investor returns cannot be explained by risks, though this is a small percentage of overall payments. The report suggests the public sector could benefit from better negotiating skills and alternative financing models warrant consideration in the Treasury's ongoing review of private financing.