Defined term

“functions”

Defined in 105 Acts, 110 statutory instruments and 1 EU-derived instrument.

  1. Administration of Justice Act 1985 Act
  2. Advanced Research and Invention Agency Act 2022 Act
  3. Agriculture (Miscellaneous Provisions) Act 1968 Act
  4. Agriculture (Scotland) Act 1948 Act
  5. Airports Act 1986 Act
  6. Ancient Monuments and Archaeological Areas Act 1979 Act 2 definitions
  7. The Ashton Vale to Temple Meads and Bristol City Centre Rapid Transit Order 2013 SI
  8. The Associated British Ports (Immingham Green Energy Terminal) Order 2025 SI 3 definitions
  9. The Beacon Fen Energy Park Order 2026 SI 8 definitions
  10. The Boston Alternative Energy Facility Order 2023 SI 2 definitions
  11. The Boston Barrier Order 2017 SI
  12. The Bridgwater Tidal Barrier Order 2022 SI
  13. Building Act 1984 Act
  14. Cardiff Bay Barrage Act 1993 Act
  15. The Cayman Islands Constitution Order 2009 SI
  16. Channel Tunnel Act 1987 Act
  17. Channel Tunnel Rail Link Act 1996 Act
  18. The Chester Guided Busway Order 2002 SI
  19. Children Act 1989 Act
  20. The Chiltern Railways (Bicester to Oxford Improvements) Order 2012 SI
  21. Civil Aviation Act 1971 Act
  22. Civil Aviation Act 1982 Act
  23. Clean Air Act 1993 Act 2 definitions
  24. Coast Protection Act 1949 Act 3 definitions
  25. The Commission for the New Towns (Transfer of Undertaking and Functions) (Tees Barrage) Order 2001 SI
  26. Commission Regulation (EU) No 389/2013 of 2 May 2013 establishing a Union Registry pursuant to Directive 2003/87/EC of the European Parliament and of the Council, Decisions No 280/2004/EC and No 406/2009/EC of the European Parliament and of the Council and repealing Commission Regulations (EU) No 920/2010 and No 1193/2011 (Text with EEA relevance) EU regulation
  27. The Competition Act 1998 (Transitional, Consequential and Supplemental Provisions) Order 2000 SI
  28. The Conservation (Natural Habitats, &c.) Regulations 1994 SI
  29. The Conservation of Habitats and Species Regulations 2010 SI
  30. The Conservation of Habitats and Species Regulations 2017 SI
  31. The Conservation of Offshore Marine Habitats and Species Regulations 2017 SI
  32. Constitutional Reform Act 2005 Act
  33. Consumers, Estate Agents and Redress Act 2007 Act
  34. The Contracting Out (Administration of the Teachers' Pensions Scheme) Order 2003 SI
  35. The Contracting Out (Functions in Relation to Cultural Objects) Order 2005 SI
  36. The Contracting Out (Functions relating to the Royal Parks) Order 2016 SI
  37. The Contracts for Difference (Electricity Supplier Obligations) Regulations 2014 SI
  38. Control of Pollution Act 1974 Act 2 definitions
  39. Coroners and Justice Act 2009 Act
  40. The Cory Decarbonisation Project Order 2025 SI 6 definitions
  41. Crime and Courts Act 2013 Act
  42. Criminal Justice and Court Services Act 2000 Act
  43. Crofters (Scotland) Act 1993 Act
  44. Crossrail Act 2008 Act
  45. The Crossrail (Kensal Green) Order 2013 SI
  46. Crown Agents Act 1979 Act
  47. The Croxley Rail Link Order 2013 SI
  48. Dartford-Thurrock Crossing Act 1988 Act
  49. The Daventry International Rail Freight Interchange Alteration Order 2014 SI
  50. Deer (Scotland) Act 1996 Act
  51. Digital Economy Act 2017 Act 2 definitions
  52. The Dogger Bank South East and West Offshore Wind Farms Order 2026 SI 3 definitions
  53. The Drax Power Station Bioenergy with Carbon Capture and Storage Extension Order 2024 SI 2 definitions
  54. The East Midlands Gateway Rail Freight Interchange and Highway Order 2016 SI
  55. The East Midlands Parkway Station (Land Acquisition) Order 2005 SI
  56. The East Northamptonshire Resource Management Facility Order 2023 SI 3 definitions
  57. Education Act 1996 Act
  58. Education and Inspections Act 2006 Act
  59. Education Reform Act 1988 Act
  60. Education (Scotland) Act 1980 Act
  61. Electricity Act 1989 Act 2 definitions
  62. Employment And Training Act 1973 Act
  63. Energy Act 2008 Act
  64. Energy Act 2010 Act
  65. Energy Act 2011 Act
  66. Energy Act 2013 Act
  67. Energy Act 2023 Act
  68. The Energy Savings Opportunity Scheme Regulations 2014 SI
  69. Environment Act 1995 Act
  70. The Environmental Permitting (England and Wales) Regulations 2016 SI
  71. The Felixstowe Branch Line and Ipswich Yard Improvement Order 2008 SI
  72. The Felixstowe Dock and Railway Company (Land Acquisition) Order 2007 SI
  73. Financial Services and Markets Act 2000 Act 6 definitions
  74. Food Act 1984 Act
  75. Food Safety Act 1990 Act
  76. Forestry Act 1967 Act
  77. Further and Higher Education Act 1992 Act
  78. The Gate Burton Energy Park Order 2024 SI 8 definitions
  79. Goods Vehicles (Licensing of Operators) Act 1995 Act
  80. Government of Wales Act 1998 Act
  81. The Greenhouse Gas Emissions Trading Scheme Regulations 2012 SI
  82. Hairdressers (Registration) Act 1964 Act
  83. Hallmarking Act 1973 Act
  84. Harbours Act 1964 Act
  85. Health Act 1999 Act
  86. The Health and Safety (Enforcing Authority for Railways and Other Guided Transport Systems) Regulations 2006 SI
  87. Health Authorities Act 1995 Act
  88. Health Service Commissioners Act 1993 Act
  89. The Heathrow Express Railway Extension Order 2002 SI
  90. The Helios Renewable Energy Project Order 2025 SI 4 definitions
  91. High Speed Rail (London - West Midlands) Act 2017 Act
  92. High Speed Rail (West Midlands - Crewe) Act 2021 Act
  93. Highways Act 1980 Act
  94. Housing Act 1996 Act
  95. Housing Grants, Construction and Regeneration Act 1996 Act
  96. The HyNet Carbon Dioxide Pipeline Order 2024 SI 9 definitions
  97. The Immingham Open Cycle Gas Turbine Order 2020 SI 5 definitions
  98. Investigatory Powers Act 2016 Act
  99. The Keuper Underground Gas Storage Facility Order 2017 SI 2 definitions
  100. The Lake Lothing (Lowestoft) Third Crossing Order 2020 SI 3 definitions
  101. The Leeds Railway Station (Southern Entrance) Order 2013 SI
  102. Legal Aid, Sentencing and Punishment of Offenders Act 2012 Act
  103. Legal Services Act 2007 Act
  104. The Legal Services Act 2007 (Commencement No.1 and Transitory Provisions) Order 2008 SI
  105. Local Authority Social Services Act 1970 Act
  106. Local Government (Miscellaneous Provisions) Act 1976 Act
  107. London Government Act 1963 Act
  108. The London Overground (Barking Riverside Extension) Order 2017 SI
  109. The London Underground (Bank Station Capacity Upgrade) Order 2015 SI
  110. The London Underground (East London Line Extension) (No. 2) Order 2001 SI 2 definitions
  111. The London Underground (Northern Line Extension) Order 2014 SI
  112. The Luton Dunstable Translink Order 2006 SI 2 definitions
  113. Marine and Coastal Access Act 2009 Act
  114. The Medworth Energy from Waste Combined Heat and Power Facility Order 2024 SI 4 definitions
  115. The Montserrat Constitution Order 2010 SI
  116. The National Assembly for Wales Referendum (Assembly Act Provisions) (Referendum Question, Date of Referendum Etc.) Order 2010 SI
  117. National Assistance Act 1948 Act
  118. The National Grid (Bramford to Twinstead Reinforcement) Order 2024 SI 3 definitions
  119. The National Grid (Hinkley Point C Connection Project) Order 2016 SI 2 definitions
  120. The National Grid (King’s Lynn B Power Station Connection) Order 2013 SI
  121. National Health Service Act 1977 Act
  122. National Health Service Act 2006 Act 2 definitions
  123. National Health Service (Scotland) Act 1978 Act 2 definitions
  124. National Health Service (Wales) Act 2006 Act 2 definitions
  125. The Net Zero Teesside Order 2024 SI 5 definitions
  126. The Network Rail (Buxton Sidings Extension) Order 2017 SI
  127. The Network Rail (Cambridge South Infrastructure Enhancements) Order 2022 SI 3 definitions
  128. The Network Rail (Chart Leacon) Order 2021 SI 3 definitions
  129. The Network Rail (Church Fenton Level Crossing Reduction) Order 2024 SI
  130. The Network Rail (East West Rail) (Bicester to Bedford Improvements) Order 2020 SI
  131. The Network Rail (Hitchin (Cambridge Junction)) Order 2011 SI
  132. The Network Rail (Hope Valley Capacity) Order 2018 SI
  133. The Network Rail (Huddersfield to Westtown (Dewsbury) Improvements) Order 2022 SI
  134. The Network Rail (Ipswich Chord) Order 2012 SI
  135. The Network Rail (Leeds to Micklefield Enhancements) Order 2024 SI 2 definitions
  136. The Network Rail (North Doncaster Chord) Order 2012 SI
  137. The Network Rail (Norton Bridge Area Improvements) Order 2014 SI
  138. The Network Rail (Nuneaton North Chord) Order 2010 SI
  139. The Network Rail (Ordsall Chord) Order 2015 SI
  140. The Network Rail (Oxford Station Phase 2 Improvements (Land Only)) (No. 2) Order 2022 SI 3 definitions
  141. The Network Rail (Oxford Station Phase 2 Improvements (Land Only)) Order 2022 SI 3 definitions
  142. The Network Rail (Reading) (Land Acquisition) Order 2009 SI
  143. The Network Rail (Redditch Branch Enhancement) Order 2013 SI
  144. The Network Rail (Thameslink 2000) Order 2006 SI
  145. The Network Rail (Tinsley Chord) Order 2015 SI
  146. The Network Rail (Werrington Grade Separation) Order 2018 SI
  147. The Network Rail (West Coast Main Line) Order 2003 SI
  148. The Network Rail (West Coast Main Line) Order 2004 SI
  149. New Forest Act 1964 Act
  150. New Towns Act 1981 Act
  151. The North Lincolnshire Green Energy Park Order 2025 SI 4 definitions
  152. The North Wales Wind Farms Connection Order 2016 SI
  153. The Northampton Gateway Rail Freight Interchange Order 2019 SI 3 definitions
  154. Northern Ireland Act 1998 Act
  155. Northern Ireland Constitution Act 1973 Act
  156. The Nottingham Express Transit System Order 2009 SI
  157. Nuclear Energy (Financing) Act 2022 Act 3 definitions
  158. The Nuclear Regulated Asset Base Model (Revenue Collection) Regulations 2023 SI
  159. Opencast Coal Act 1958 Act
  160. Opticians Act 1989 Act
  161. Pension Schemes Act 2026 Act
  162. The Pitcairn Constitution Order 2010 SI
  163. Planning (Hazardous Substances) Act 1990 Act
  164. Planning (Listed Buildings and Conservation Areas) (Scotland) Act 1997 Act
  165. Police (Northern Ireland) Act 2000 Act
  166. Police Reform and Social Responsibility Act 2011 Act
  167. Political Parties, Elections and Referendums Act 2000 Act
  168. Pollution Prevention and Control Act 1999 Act
  169. The Portishead Branch Line (MetroWest Phase 1) Order 2022 SI 5 definitions
  170. Ports Act 1991 Act
  171. The Preesall Underground Gas Storage Facility Order 2015 SI
  172. The Progress Power (Gas Fired Power Station) Order 2015 SI 3 definitions
  173. Public Health (Control of Disease) Act 1984 Act
  174. The Railtrack (Shortlands Junction) Order 2001 SI
  175. Railways Act 1993 Act
  176. The Reinforcement to the North Shropshire Electricity Distribution Network Order 2020 SI 2 definitions
  177. The Revenue and Customs (Complaints and Misconduct) Regulations 2005 SI
  178. The River Humber Gas Pipeline Replacement Order 2016 SI 2 definitions
  179. The River Tyne (Tunnels) Order 2005 SI
  180. The Riverside Energy Park Order 2020 SI 6 definitions
  181. The Rother Valley Railway (Bodiam to Robertsbridge Junction) Order 2023 SI
  182. Scotland Act 1998 Act 2 definitions
  183. The Scotland Act 2016 (Transitional) Regulations 2017 SI
  184. Serious Crime Act 2007 Act
  185. Severn Bridges Act 1992 Act
  186. The Silvertown Tunnel Order 2018 SI 3 definitions
  187. Slaughterhouses Act 1974 Act
  188. Social Security Act 1990 Act
  189. Social Work (Scotland) Act 1968 Act
  190. Solicitors (Scotland) Act 1980 Act
  191. The South Humber Bank Energy Centre Order 2021 SI 3 definitions
  192. The St Helena, Ascension and Tristan da Cunha Constitution Order 2009 SI 3 definitions
  193. The Steeple Renewables Project Order 2026 SI 8 definitions
  194. Teaching and Higher Education Act 1998 Act
  195. The Telford Railfreight Terminal (Donnington) Order 2005 SI
  196. The Thames Water Utilities Limited (Thames Tideway Tunnel) Order 2014 SI 4 definitions
  197. The Thorpe Marsh Gas Pipeline Order 2016 SI 2 definitions
  198. Town and Country Planning Act 1971 Act
  199. Town and Country Planning Act 1990 Act
  200. Town and Country Planning (Scotland) Act 1997 Act
  201. Transport Act 1968 Act
  202. Transport Act 1985 Act 2 definitions
  203. The Transport for Greater Manchester (Light Rapid Transit System) (Trafford Park Extension) Order 2016 SI
  204. The Triton Knoll Electrical System Order 2016 SI 4 definitions
  205. Trustee Act 2000 Act
  206. The Turks and Caicos Islands Constitution Order 2006 SI
  207. The Turks and Caicos Islands Constitution Order 2011 SI
  208. Universities (Scotland) Act 1966 Act
  209. The Viking CCS Carbon Dioxide Pipeline Order 2025 SI 8 definitions
  210. Water Act 1989 Act
  211. Water Act 2014 Act
  212. Water Industry Act 1991 Act
  213. The Water Industry (Specified Infrastructure Projects) (English Undertakers) Regulations 2013 SI
  214. Water (Scotland) Act 1980 Act
  215. The Willington C Gas Pipeline Order 2014 SI 2 definitions
  216. The Windsor Framework (Implementation) Regulations 2024 SI

Definitions are taken from the instruments as published on zoomLaw, for guidance only. Check the instrument itself for its scope and any amendments.