| NIM01101 | Introduction |
| NIM01102 | Background |
| NIM01105 | Structural changes: Primary not contracted-out NICs |
| NIM01106 | Structural changes: Primary contracted-out NICs |
| NIM01107 | Structural changes: Married women and widows reduced rate NICs |
| NIM01110 | Structural changes: Assessing primary Class 1 NICs from 6 April 2003 |
| NIM01115 | Structural changes: Assessing primary Class 1 NICs from 6 April 2003: Examples: Contents |
| NIM01130 | Structural changes: Secondary NICs |
| NIM01150 | Structural changes: Effect on entitlement to contributory benefits |
| NIM01159 | Structural changes: The Class 1 and 2 annual maximum: Contents |
| NIM01170 | Structural changes: The Class 1 and 2 annual maximum: Examples: Contents |
| NIM01180 | Structural changes: Changes to the deferment process from 6 April 2003 |
| NIM01181 | Structural changes: Changes to the deferment process from 6 April 2003: Unofficial deferment |
| NIM01190 | Structural changes: Changes to the excess refunds process from 6 April 2003 |