| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Large | Terminated July 2001 | |
| England | Hertfordshire | Large | Terminated June 2000 | |
| England | Hertfordshire | Large | Terminated June 1999 | |
| England | Hertfordshire | Small | Terminated August 2014 | |
| England | Hertfordshire | Large | Terminated September 2008 | |
| England | Hertfordshire | Large | Terminated October 2017 | |
| England | Hertfordshire | Large | Terminated May 2001 | |
| England | Hertfordshire | Large | Terminated July 2001 | |
| England | Hertfordshire | Large | Terminated September 2000 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated February 2006 | |
| England | Hertfordshire | Large | Terminated December 2008 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated March 2002 | |
| England | Hertfordshire | Large | Terminated May 2002 | |
| England | Hertfordshire | Large | Terminated June 2000 | |
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small |