| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated November 2000 | |
| England | Hertfordshire | Large | Terminated August 1997 | |
| England | Hertfordshire | Large | Terminated June 2000 | |
| England | Hertfordshire | Large | Terminated December 1995 | |
| England | Hertfordshire | Large | Terminated May 2007 | |
| England | Hertfordshire | Large | Terminated March 2006 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated April 2003 | |
| England | Hertfordshire | Large | Terminated May 2005 | |
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated April 2006 | |
| England | Hertfordshire | Large | Terminated November 2011 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small |