| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated May 2011 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated February 2004 | |
| England | Hertfordshire | Large | Terminated August 2015 | |
| England | Hertfordshire | Large | Terminated June 1999 | |
| England | Hertfordshire | Large | Terminated January 1995 | |
| England | Hertfordshire | Large | Terminated January 1995 | |
| England | Hertfordshire | Large | Terminated March 2001 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated July 1995 | |
| England | Hertfordshire | Large | Terminated February 2001 | |
| England | Hertfordshire | Large | Terminated June 1998 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated May 2014 | |
| England | Hertfordshire | Large | Terminated June 1998 | |
| England | Hertfordshire | Large | Terminated July 1995 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated August 2010 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small |