Boris Johnson wants to introduce free ports in the UK. International trade secretary Liz Truss has said the 10 ports would create thousands of jobs. So, will these new tariff free zones, where goods can be imported and exported without the paperwork, help Britain grows its manufacturing base, or is it just a way to try and keep car plants onshore for a while longer as the UK heads to a no-deal Brexit? Phil Dobbie puts these questions to Prof Steve Keen, who has spent some time early in his career studying the impact of free ports in China – but there the proposition, and the opportunity, was radically different.

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