NIM27000CO - Special Cases: Contents
| NIM27000 | Aircrew |
| NIM28000 | Continental Shelf |
| NIM29000 | Mariners |
| NIM30000 | Married Women |
| NIM31000 | Widows |
| NIM32000 | Members of the Forces |
| NIM33000 | Class 1 liability - Workers Going to and Coming from Abroad - European Ecomonic Area (EEA) |
| NIM33014 | Class 1 liability - Workers Going to and Coming from Abroad - Reciprocal Agreement (RA) |
| NIM33019 | Class 1 liability - Workers Going to and Coming from Abroad - Rest of World (ROW) |
| NIM33500 | Class 2 liability - Workers going to and coming from abroad |
| NIM33600 | Voluntary NICs - People going to and coming from abroad |
| NIM34000 | Volunteer Development Workers |
| NIM35000 | Share Fishermen |
| NIM36000 | People Over Pension Age |
