Within the UK, Nomenclature of Units for Territorial Statistics (NUTS) areas / Local Administrative Units (LAUs) are determined as shown in the tables below.
NUTS areas are stable and will only be amended periodically.
LAUs are amended annually to reflect administrative boundary change.
| NUTS Level | 1 | 2 | 3 |
| England | Government Office Regions (GORs)* | Counties/Groups of counties | Counties/Groups of unitary authorities |
| Scotland | Scotland | Combinations of council areas, LECs and parts thereof | Combinations of council areas, LECs and parts thereof |
| Wales | Wales | Groups of unitary authorities | Groups of unitary authorities |
| Northern Ireland | Northern Ireland | Northern Ireland | Groups of district council areas |
| Total in UK | 12 | 37 | 139 |
* Government Office Regions (GORs) closed at the end of March 2011. From 1 April 2011 the areas previously covered by GORs should be referred to as 'Regions' for statistical purposes.
| LAU Levels | 1 | 2 |
| England | Districts/unitary authorities | Electoral wards/divisions |
| Scotland | Combinations of council areas, LECs and parts thereof | Electoral wards or, rarely, parts thereof |
| Wales | Unitary authorities | Electoral divisions |
| Northern Ireland | District council areas | Electoral wards |
| Total in UK | 415 | c.10,000 |
