| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated August 2021 | |
| England | Hertfordshire | Large | Terminated February 2010 | |
| England | Hertfordshire | Large | Terminated July 2005 | |
| England | Hertfordshire | Large | Terminated February 2021 | |
| England | Hertfordshire | Large | Terminated February 2004 | |
| England | Hertfordshire | Large | Terminated June 1997 | |
| England | Hertfordshire | Large | Terminated December 1998 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated December 1998 | |
| England | Hertfordshire | Large | Terminated June 1999 | |
| England | Hertfordshire | Large | Terminated January 2001 | |
| England | Hertfordshire | Large | Terminated June 2008 | |
| England | Hertfordshire | Large | Terminated June 2003 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated June 1999 | |
| England | Hertfordshire | Large | Terminated June 1999 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated July 2002 | |
| England | Hertfordshire | Large | Terminated April 2009 |