For further practical guidance on the financing of energy, power and resources projects across a number of sectors, including those discussed in this Practice Note, see also textbook: Energy and Resources Financing: A Practical Handbook. What is the UK Continental Shelf (UKCS) petroleum project lifecycle? The lifecycle of a typical petroleum project on the UKCS can be viewed in the following stages: Each stage of an upstream petroleum project will require several different legal contracts, the precise mix of which will depend on the project specifics, including the nature of the field, the parties to the project and the anticipated activities to be carried out. We set out below a brief overview of the most common commercial agreements found at each stage of a typical upstream petroleum project on the UKCS. The associated financial agreements required in connection with an upstream petroleum project and agreements relating to the acquisition and disposal of assets on the UKCS are outside the scope of this Practice Note. Licensing Licensing refers to the process by which