Practical introduction to the authorisation process for port and harbour schemes in England under the Harbours Act 1964, covering the consenting sequence, permissions required, and the key disciplines that project teams need to navigate a compliant application. The guide is aimed at developers and consultants new to harbour consenting — which describes almost everyone working on CCS terminal development today, since purpose-built CO₂ terminal infrastructure is a new asset class without an established permitting precedent. Understanding what the Harbours Act requires, and when it applies versus nationally significant infrastructure thresholds, is foundational planning knowledge for any port-based hub proposal.