![](https://image.tmdb.org/t/p/w500/9WW6A1BAnnz9Ag6iKfcZ2P8kj3U.jpg)
Before air travel, Britain's harbours were gateways to global adventure. There are more than a thousand ports, big and small, around the UK coastline, all with fascinating secret stories, many of them revealed for the first time in this episode.
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