As of today, July 1, 2026, the United Kingdom's Emissions Trading Scheme has expanded to cover domestic maritime transport. For shipowners and operators running vessels on UK routes or calling at UK ports, this is not a future regulatory development to monitor, it is a live compliance obligation that began this morning. This post is a practical overview of what the UK ETS is, who it applies to, what it requires operators to do, and how it sits alongside the EU ETS framework t
