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[[File:English unitary authorities 2009.svg|thumb|England, unitary authorities shown in red]][[File:English metropolitan boroughs 2009.svg|thumb|England, metropolitan boroughs hown in red]]A '''unitary authority''' is an area in [[England]] that has only a single tier of local government. From 1888 onwards County Boroughs had performed a similar function, but these were abolished in 1972 when a two-tier system of local government was applied throughout the country, with counties at the upper level and districts (some desigmated as boroughs or cities) as the lower level). From 1985 onwards there has been a move to replace the two-tier system with unitary authorities, but this not happened throught the country. Most of the current unitary authorities represent previous districts, but is some cases such as Cornwall the existing county has become a unitary authority, the districts  having been abolished.

The previous counties have mostly been retained as [[ceremonial counties]] but have no local government functions in the areas covered by separate unitary authorities.

[[Wales]], [[Scotland]], and [[Northern Ireland]] all have single-tier local government (beneath their own parliaments or assemblies) but the term "unitary authority" is not used there.

==List of English unitary authorities==
{{columns-list|3|
* [[Bath and North East Somerset]]
* [[Bedford]]
* [[Blackburn with Darwen]]
* [[Blackpool]]
* [[Bournemouth]]
* [[Bracknell Forest]]
* [[Brighton and Hove]]
* [[Bristol]]
* [[Central Bedfordshire]]
* [[Cheshire East]]
* [[Cheshire West and Chester]]
* [[Cornwall]]
* [[County Durham]]
* [[Derby]]
* [[Darlington]]
* [[East Riding of Yorkshire]]
* [[Halton]]
* [[Hartlepool]]
* [[Herefordshire]]
* [[Isle of Wight]]
* [[Kingston upon Hull]]
* [[Leicester]]
* [[Luton]]
* [[Medway]]
* [[Middlesbrough]]
* [[Milton Keynes]]
* [[North East Lincolnshire]]
* [[North Lincolnshire]]
* [[North Somerset]]
* [[Northumberland]]
* [[Nottingham]]
* [[Peterborough]]
* [[Plymouth]]
* [[Poole]]
* [[Portsmouth]]
* [[Reading]]
* [[Redcar and Cleveland]]
* [[Rutland]]
* [[Shropshire]]
* [[Slough]]
* [[South Gloucestershire]]
* [[Southampton]]
* [[Southend-on-Sea]]
* [[Stockton-on-Tees]]
* [[Stoke-on-Trent]]
* [[Swindon]]
* [[Telford and Wrekin]]
* [[Thurrock]]
* [[Torbay]]
* [[Warrington]]
* [[West Berkshire]]
* [[Wiltshire]]
* [[Windsor and Maidenhead]]
* [[Wokingham]]
* [[York]]
}}

==List of metropolitan boroughs==
{{columns-list|3|
*[[Greater Manchester]]
**[[Manchester]]
** [[Bolton]]
** [[Bury]]
** [[Oldham]]
** [[Rochdale]]
** [[Salford]]
** [[Stockport]]
** [[Tameside]]
** [[Trafford]]
** [[Wigan]]
* [[Merseyside]]
** [[Liverpool]]
** [[Knowsley]]
** [[St Helens]]
** [[Sefton]]
** [[Wirral]]
* [[South Yorkshire]]
** [[Sheffield]]
** [[Barnsley]]
** [[Doncaster]]
** [[Rotherham]]
* [[Tyne and Wear]]
** [[Newcastle upon Tyne]]
** [[Gateshead]]
** [[South Tyneside]]
** [[North Tyneside]]
** [[Sunderland]]
* [[West Midlands]]
** [[Birmingham]]
** [[Coventry]]
** [[Dudley]]
** [[Sandwell]]
** [[Solihull]]
** [[Walsall]]
** [[Wolverhampton]]
* [[West Yorkshire]]
** [[Leeds]]
** [[Bradford]]
** [[Calderdale]]
** [[Kirklees]]
** [[Wakefield]]
}}
[[Category:England]]