| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated July 2006 | |
| England | Hertfordshire | Large | Terminated January 2006 | |
| England | Hertfordshire | Large | Terminated May 2003 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated July 2011 | |
| England | Hertfordshire | Large | Terminated January 2006 | |
| England | Hertfordshire | Large | Terminated September 2005 | |
| England | Hertfordshire | Large | Terminated May 2008 | |
| England | Hertfordshire | Large | Terminated January 2014 | |
| England | Hertfordshire | Large | Terminated August 2016 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated June 2000 | |
| England | Hertfordshire | Large | Terminated December 1999 |