| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated January 2018 | |
| England | Hertfordshire | Large | Terminated February 2008 | |
| England | Hertfordshire | Large | Terminated February 2008 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated February 2008 | |
| England | Hertfordshire | Large | Terminated February 2022 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated November 2003 | |
| England | Hertfordshire | Large | Terminated May 2005 | |
| England | Hertfordshire | Large | Terminated September 2000 | |
| England | Hertfordshire | Large | Terminated March 2008 | |
| England | Hertfordshire | Large | Terminated September 2003 | |
| England | Hertfordshire | Large | Terminated November 2002 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated April 2004 | |
| England | Hertfordshire | Large | Terminated March 2002 | |
| England | Hertfordshire | Small | Terminated April 2012 | |
| England | Hertfordshire | Large | Terminated January 2015 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated May 2008 |