Southwestern Distillery is an English gin producer that operates from Cornwall, in the southwestern tip of England. The distillery focuses specifically on gin production, crafting spirits that reflect their coastal location and regional identity.

The distillery's approach centers on creating gin expressions that incorporate maritime influences, as evidenced by their navy-strength offerings. Navy gin traditionally refers to spirits bottled at higher proof levels, historically around 57% ABV, which was the strength required by the British Royal Navy to ensure the spirit would still ignite gunpowder if spilled on it. This style delivers more concentrated botanical flavors and a fuller mouthfeel compared to standard gin strengths.

Their current range includes "The Seadog" Navy Gin under the Tarquin's label, which represents their higher-proof gin category designed to showcase intensified botanical character and the robust flavor profile associated with navy-strength spirits.