| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated February 2012 | |
| England | Hertfordshire | Large | Terminated April 2012 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated May 2021 | |
| England | Hertfordshire | Large | Terminated August 2004 | |
| England | Hertfordshire | Large | Terminated March 2006 | |
| England | Hertfordshire | Large | Terminated August 2005 | |
| England | Hertfordshire | Large | Terminated November 2003 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated May 2006 | |
| England | Hertfordshire | Large | Terminated May 2006 | |
| England | Hertfordshire | Large | Terminated June 2005 | |
| England | Hertfordshire | Large | Terminated January 2009 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated June 1997 | |
| England | Hertfordshire | Small |