John Ellicott (1706-1772) was one of the most eminent clock and watch makers of the 18th century. Ellicott took premises in Sweetings Alley, near the Royal Exchange, circa 1728. He was elected a Fellow of the Royal Society in 1738, serving on its council for three years. He took a keen interest in scientific developments of the day and the famous globemaker John Senex was a friend, as was the astronomer John Hadley. In a portrait of Ellicott by Nathaniel Dance he is shown with drawings of his compensated pendulum and it is for his work on temperature compensation that he is perhaps best known. In 1751 he presented a paper to the Royal Society 'Contrivances for preventing the Irregularity of Pendulums Arising from Temperature'. Above all, Ellicott was renowned for the fine quality of his workmanship and not surprisingly he was appointed Clockmaker to the King. In 1760 he was joined in business by his son Edward and the two worked in partnership until John's death in 1772.