John Smedley makes the finest cotton knitwear in Britain, having been around for 225 years John Smedley originally producing cotton underwear to now being one of the best knitwear producers creating the iconic ‘Isis’ three button polo and ‘Leander’ the long sleeve polo. John Smedley uses Sea Island cotton to make the unique and luxurious cotton fabric used for all John Smedley garments.