Feasibility studies with an aim to amend existing agreements should be aligned (as appropriate) with original business case / project brief objectives, concession deed and service specifications (care should also be taken to ensure that modifications do not breach Government legislation or policy). Options explored should clearly demonstrate how proposed changes are expected to contribute towards the attainment of improved VfM outcomes. Analyses could include factors relating to costs (e.g. financial cost to government including insurances coverage such as those relating to intellectual property; legal due diligence relating to specific alterations that would be made to contractual terms; and financial due diligence relating to changes that would be made to the financial model such as the payment mechanism), return on investment (e.g. to the taxpayer), the risks involved (e.g. consortia capabilities, impact of change on existing services or infrastructure, potential for further opportunity risk realisation) and how the achievement of VfM will be measured throughout the concession period. The public partner (or its nominee) could conduct performance audits every two years to appraise the quality of services being provided by the concessionaire. Audits could be conducted in conjunction with the active six-monthly review, testing and update of business continuity plans, with all business continuity planning and risk management policies, frameworks and procedures being reviewed and updated annually; and six-monthly reviews of identified opportunity risks.