| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Small | ||
| England | Hertfordshire | Large | Terminated August 1997 | |
| England | Hertfordshire | Large | Terminated December 1996 | |
| England | Hertfordshire | Large | Terminated June 1997 | |
| England | Hertfordshire | Large | Terminated September 2013 | |
| England | Hertfordshire | Large | Terminated December 1997 | |
| England | Hertfordshire | Large | Terminated December 1997 | |
| England | Hertfordshire | Large | ||
| England | Hertfordshire | Large | Terminated January 2001 | |
| England | Hertfordshire | Large | Terminated December 1998 | |
| England | Hertfordshire | Large | Terminated December 1998 | |
| England | Hertfordshire | Large | Terminated June 1999 | |
| England | Hertfordshire | Large | Terminated June 2000 | |
| England | Hertfordshire | Large | Terminated August 2001 | |
| England | Hertfordshire | Large | Terminated November 2001 | |
| England | Hertfordshire | Large | Terminated March 2001 | |
| England | Hertfordshire | Large | Terminated April 2001 | |
| England | Hertfordshire | Large | Terminated March 2004 |