 Notes
The Council of the Isles of Scilly is a "sui generis" single-tier authority, created in 1890 and since 1930 has held the "powers, duties and liabilities" of a county council.It thus is not a unitary authority as those are such authorities created under the Local Government Act 1992.The 36 metropolitan borough councils are also the sole elected local government units in their areas (except for parish councils in a few locations), but share strategic functions with joint boards and arrangements.