The United Kingdom underwent a local government reform in 1995-1998. Of the four countries, only Northern Ireland's local government structure remained unchanged (26 districts). Wales was reorganized into 22 unitary authorities. Scotland emerged with 29 unitary districts and three island areas. England's new primary subdivisions are 34 counties, 47 unitary authorities, 36 metropolitan districts, and 33 London boroughs. The 34 counties are subdivided into 238 districts; the other divisions are all unitary, meaning that they have no smaller units of local government under them. The counties are sometimes called administrative counties, to distinguish them from the ceremonial counties.