| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated November 2009 | |
| England | Hertfordshire | Small | Terminated October 2000 | |
| England | Hertfordshire | Small | Terminated October 2000 | |
| England | Hertfordshire | Large | Terminated March 2002 | |
| England | Hertfordshire | Large | Terminated January 2003 | |
| England | Hertfordshire | Large | Terminated March 2019 | |
| England | Hertfordshire | Large | Terminated July 2002 | |
| England | Hertfordshire | Large | Terminated November 2013 | |
| England | Hertfordshire | Large | Terminated January 2007 | |
| England | Hertfordshire | Small | Terminated October 2000 |