This portfolio covers the topics of commercial planning and commercial projects in PPMP20011 Unit Portfolio for Week 1. It includes readings on the Channel Tunnel, collaborative negotiations for large-scale infrastructure projects, and Brexit negotiations. The learning outcomes of the unit include understanding diverse and complex government and non-government project contractual arrangements, methods of project negotiation, conflict management, and stakeholder engagement, consequences of project delays, disruptions, and changes to planned activities, and project management tools that help avoid or provide conflict resolution via negotiated solutions.