| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated May 2009 | |
| England | Hertfordshire | Large | Terminated February 2008 | |
| England | Hertfordshire | Large | Terminated December 2008 | |
| England | Hertfordshire | Large | Terminated July 2007 | |
| England | Hertfordshire | Large | Terminated November 2005 | |
| England | Hertfordshire | Large | Terminated April 2007 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated January 2010 | |
| England | Hertfordshire | Large | Terminated May 2011 | |
| England | Hertfordshire | Large | Terminated December 2013 | |
| England | Hertfordshire | Large | Terminated February 2019 | |
| England | Hertfordshire | Large | Terminated July 2012 | |
| England | Hertfordshire | Large | Terminated May 2013 | |
| England | Hertfordshire | Large | Terminated April 2013 | |
| England | Hertfordshire | Large | Terminated September 2013 | |
| England | Hertfordshire | Large | Terminated February 2022 | |
| England | Hertfordshire | Large | Terminated February 2019 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated November 2000 |