| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated July 2001 | |
| England | Hertfordshire | Large | Terminated August 2005 | |
| England | Hertfordshire | Large | Terminated April 2012 | |
| England | Hertfordshire | Large | Terminated October 2001 | |
| England | Hertfordshire | Large | Terminated January 2006 | |
| England | Hertfordshire | Large | Terminated January 2008 | |
| England | Hertfordshire | Large | Terminated May 2005 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated November 2002 | |
| England | Hertfordshire | Large | Terminated April 2001 | |
| England | Hertfordshire | Large | Terminated January 2008 | |
| England | Hertfordshire | Large | Terminated December 2013 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated March 2010 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated July 2010 | |
| England | Hertfordshire | Large | Terminated January 2001 | |
| England | Hertfordshire | Large | Terminated November 2002 | |
| England | Hertfordshire | Large | Terminated May 2005 | |
| England | Hertfordshire | Small |