| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated November 2011 | |
| England | Hertfordshire | Large | Terminated March 2006 | |
| England | Hertfordshire | Large | Terminated January 2006 | |
| England | Hertfordshire | Large | Terminated August 2004 | |
| England | Hertfordshire | Large | Terminated February 2019 | |
| England | Hertfordshire | Large | Terminated July 2005 | |
| England | Hertfordshire | Large | Terminated March 2009 | |
| England | Hertfordshire | Large | Terminated January 2005 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | Terminated March 2005 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated November 2003 | |
| England | Hertfordshire | Large | Terminated May 1994 | |
| England | Hertfordshire | Large | Terminated June 2008 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | Terminated May 1994 |