| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated August 2017 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated June 2018 | |
| England | Hertfordshire | Large | Terminated February 2021 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large |