| Postcode | Country | County | Type | Status |
|---|---|---|---|
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large | |
| England | Hertfordshire | Large |