Unitary authorities are local government entities in the United Kingdom that have a single tier of administration. They are responsible for providing all local services, such as education, housing, and transportation, within their designated areas. This structure simplifies governance by eliminating the need for a two-tier system, which typically includes both county and district councils. These authorities are often found in areas where a single council can effectively manage local needs. Examples of unitary authorities include Bristol, Isle of Wight, and Northumberland. By consolidating services, unitary authorities aim to improve efficiency and responsiveness to community needs.