| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated May 2015 | |
| England | Hertfordshire | Large | Terminated November 2006 | |
| England | Hertfordshire | Large | Terminated April 2005 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated April 2001 | |
| England | Hertfordshire | Large | Terminated May 2003 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated April 2001 | |
| England | Hertfordshire | Large | Terminated November 2001 | |
| England | Hertfordshire | Large | Terminated February 2020 | |
| England | Hertfordshire | Large | Terminated October 2018 | |
| England | Hertfordshire | Large | Terminated September 2000 | |
| England | Hertfordshire | Large | Terminated August 2004 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated July 2005 | |
| England | Hertfordshire | Large | Terminated December 2013 | |
| England | Hertfordshire | Large | Terminated October 2015 | |
| England | Hertfordshire | Large | Terminated November 2003 | |
| England | Hertfordshire | Large | Terminated November 2003 | |
| England | Hertfordshire | Large | Terminated September 2000 |