The Isles of Scilly are a small archipelago off the southwestern tip of Cornwall, England, United Kingdom. One of the islands, St Agnes, is over four miles further south than the most southerly point of the British mainland at Lizard Point. The total population of the islands at the 2021 United Kingdom census was 2,100. Scilly forms part of the ceremonial county of Cornwall, and some services are combined with those of Cornwall.