Lists of mountains and hills in the British Isles in England, 366 in Wales and 11 in the Channel Islands. A Simm is a mountain the British Isles that is over high and has a prominence of at least . The word comes from Six-hundred Metre Mountain. There are currently 2,754 recorded Simms in the British Isles, including 2,188 Scottish Simms, 192 English Simms, 149 Welsh Simms, 1 Isle of Man Simm, and 224 Irish Simms. By definition, all Simms are also TuMPs (see below) and most, if not all, are mountains, depending on whether 600 metres or 2,000 feet (610 m) (e.g. a ), is used as the
Terminology of the British Isles until 1949), is an association of independent states roughly corresponding to the former British Empire. (This has no connection with the Commonwealth of England, a short-lived republic replacing the previous kingdoms during the English Interregnum (1649–1660).) The adjectives used to describe the contents and attributes of the various constituent parts of the British Isles also cause confusion. In the absence of a single adjective to refer to the United Kingdom, "British" is generally used to refer to the United Kingdom as a whole. However, in a specifically physical geographical sense, "British" is used to refer to the island of Great