| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated February 2007 | |
| England | Hertfordshire | Large | Terminated December 1998 | |
| England | Hertfordshire | Large | Terminated December 1999 | |
| England | Hertfordshire | Large | Terminated November 2002 | |
| England | Hertfordshire | Large | Terminated September 2001 | |
| England | Hertfordshire | Large | Terminated June 2000 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated December 2010 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated June 2003 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated January 2001 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small |