The Plymouth is the oldest working in England. It has been making Plymouth Gin according to the original recipe since 1793.Plymouth Gin Navy Strength celebrates the brand’s long association with the British Royal Navy. Navy Strength was, coincidentally, the benchmark at which a spirit could be spilt onto gunpowder but yet still allow it to ignite. For almost two centuries, Her Majesty’s Naval Fleet was sustained by Plymouth Gin, and no ship left port without a supply of Navy Strength.