| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated December 2008 | |
| England | Hertfordshire | Large | Terminated June 2008 | |
| England | Hertfordshire | Large | Terminated March 2013 | |
| England | Hertfordshire | Large | Terminated April 2008 | |
| England | Hertfordshire | Large | Terminated June 2008 | |
| England | Hertfordshire | Large | Terminated July 2010 | |
| England | Hertfordshire | Large | Terminated September 2008 | |
| England | Hertfordshire | Large | Terminated May 2009 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated December 2018 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated April 2002 | |
| England | Hertfordshire | Large | Terminated August 2004 | |
| England | Hertfordshire | Large | Terminated May 2006 | |
| England | Hertfordshire | Large | Terminated April 2002 | |
| England | Hertfordshire | Small | Terminated September 2000 | |
| England | Hertfordshire | Large | Terminated February 2009 | |
| England | Hertfordshire | Large | Terminated May 1994 | |
| England | Hertfordshire | Large | Terminated March 2003 | |
| England | Hertfordshire | Large | Terminated June 2016 |