In this paper we discuss how the customs and tax benefits central to the UK Freeports policy may undermine businesses’ export opportunities. Many of the UK’s Free Trade Agreements (FTAs) contain provisions explicitly denying preferential (duty-free) access to goods which contain imported materials on which UK customs duty was not paid (known as “duty drawback bans”). But, even in the absence of duty drawback bans, the preferential status of goods manufactured in Freeports is not guaranteed. There are other ways in which goods exported from Freeports might find themselves subject to penalties, such as anti-subsidy duties (whether under WTO or FTA rules), if partner countries consider that the regime in Freeports constitutes implicit subsidisation (e.g., via tax breaks). Lastly, we highlight the diverse experience of free ports and free zones around the world. Read Briefing Paper 69: Exporting from UK Freeports: Duty Drawback, Origin and Subsidies