Tresco is the second-biggest island of the Isles of Scilly in Cornwall, England. It is 297 ha in size, measuring about 3.5 km by 1.75 km.
Wikipedia https://en.wikipedia.org/wiki/Tresco,_Isles_of_Scilly
Official Website https://www.tresco.co.uk/
Coordinates 49°57'16.178" N -6°20'3.276" E