| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated July 2007 | |
| England | Hertfordshire | Large | Terminated August 2012 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated July 2002 | |
| England | Hertfordshire | Large | Terminated November 2003 | |
| England | Hertfordshire | Large | Terminated August 2010 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated February 2008 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated July 2005 | |
| England | Hertfordshire | Large | Terminated January 2016 | |
| England | Hertfordshire | Large | Terminated August 2008 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated February 2013 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small |