Islands similar to or like Great Britain

The British Isles are a group of islands in the North Atlantic off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Hebrides and over six thousand smaller islands. They have a total area of 315159 km2 and a combined population of almost 72 million, and include two sovereign states, the Republic of Ireland (which covers roughly five-sixths of Ireland), and the United Kingdom of Great Britain and Northern Ireland. Wikipedia

Island in the North Atlantic. Separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Wikipedia

Sovereign country in north-western Europe, off the north-western coast of the European mainland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Wikipedia

The terminology of the British Isles refers to the words and phrases that are used to describe the (sometimes overlapping) geographical and political areas of the islands of Great Britain, Ireland and the smaller islands which surround them. The terms are often a source of confusion, partly owing to the similarity between some of the actual words used but also because they are often used loosely. Wikipedia

One of the oldest known names for Great Britain, an island off the north-western coast of continental Europe. The terms Briton and British, similarly derived, refer to its inhabitants and, to varying extents, the smaller islands in the vicinity. Wikipedia

Sovereign state located off the north-western coast of continental Europe. With a total area of approximately 248532 km2, the UK occupies the major part of the British Isles archipelago and includes the island of Great Britain, the north-eastern one-sixth of the island of Ireland and many smaller surrounding islands. Wikipedia