| name | type | Area (m²) | capital city | Country | continent | population (people) |
|---|---|---|---|---|---|---|
| Northern Ireland | Constituent country with devolution | 13,843,000,320 | United Kingdom | Europe | 1,810,863 | |
| Scotland | Constituent country with devolution | 78,781,997,056 | United Kingdom | Europe | 5,313,600 | |
| Wales | Constituent country with devolution | 20,778,999,808 | United Kingdom | Europe | 3,063,456 |