| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated July 2001 | |
| England | Hertfordshire | Large | Terminated August 2014 | |
| England | Hertfordshire | Large | Terminated April 2012 | |
| England | Hertfordshire | Large | Terminated April 2008 | |
| England | Hertfordshire | Large | Terminated January 2010 | |
| England | Hertfordshire | Large | Terminated April 2008 | |
| England | Hertfordshire | Large | Terminated April 2014 | |
| England | Hertfordshire | Large | Terminated February 2012 | |
| England | Hertfordshire | Large | Terminated August 2020 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated May 2009 | |
| England | Hertfordshire | Large | Terminated May 2012 | |
| England | Hertfordshire | Large | Terminated July 2007 | |
| England | Hertfordshire | Large | Terminated April 2014 | |
| England | Hertfordshire | Large | Terminated July 2007 | |
| England | Hertfordshire | Large | Terminated February 2021 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | Terminated February 2019 | |
| England | Hertfordshire | Large | Terminated October 2008 | |
| England | Hertfordshire | Large | Terminated October 2001 |