| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated February 2019 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated August 2004 | |
| England | Hertfordshire | Large | Terminated May 2008 | |
| England | Hertfordshire | Large | Terminated April 2007 | |
| England | Hertfordshire | Large | Terminated July 2012 | |
| England | Hertfordshire | Large | Terminated March 2006 | |
| England | Hertfordshire | Large | Terminated March 2002 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated December 1994 | |
| England | Hertfordshire | Large | Terminated June 1996 | |
| England | Hertfordshire | Large | Terminated December 1997 | |
| England | Hertfordshire | Large | Terminated December 1996 | |
| England | Hertfordshire | Large | Terminated June 1996 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated December 1996 |