British Johns is a term used to refer to the British Royal Navy sailors who served in the late 18th and early 19th centuries. The term is derived from the name of John, a common name among British sailors at the time. The term 'LOOS' is a reference to the LOOS Islands, which were a group of islands off the coast of Scotland that were used as a base for the British Royal Navy during this period. The LOOS Islands were an important part of the British Royal Navy's operations, providing a safe haven for ships and personnel.