According to the map of Great Britain, it consists of England, Northern Ireland, Scotland and Wales. Ireland is divided into Northern Ireland, which is part of Britain, and the Republic of Ireland. Northern Ireland is represented by the letter "B" on this map, while the Republic of Ireland, which is not a part of Britain, is represented by the letter "C". Scotland is represented by the letter "A", while Wales is represented by the letter "E". England is represented by the letter "D".