L1 — 11 codes dans 10 localités (Royaume-Uni).
| Code postal | Localité / Quartier | Zone administrative | Coordonnées |
|---|---|---|---|
| Liverpool | Merseyside · England | 53.4106, -2.9779 | |
| Aintree | Merseyside · England | 53.4754, -2.952 | |
| Liverpool | Merseyside · England | 53.4481, -2.9155 | |
| West Derby | Merseyside · England | 53.4328, -2.9096 | |
| Liverpool | Merseyside · England | 53.4179, -2.9206 | |
| Knotty Ash | Merseyside · England | 53.4162, -2.8965 | |
| Liverpool | Merseyside · England | 53.3975, -2.9206 | |
| Childwall | Merseyside · England | 53.3972, -2.897 | |
| Aigburth | Merseyside · England | 53.3653, -2.9178 | |
| Allerton | Merseyside · England | 53.3805, -2.9086 | |
| Mossley Hill | Merseyside · England | 53.3805, -2.9086 | |
| Garston | Merseyside · England | 53.3333, -2.9 | |
| Grassendale | Merseyside · England | 53.3333, -2.9 |