| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated August 2005 | |
| Wales | (pseudo) Wales | Large | Terminated January 2006 | |
| Wales | (pseudo) Wales | Large | Terminated July 2006 | |
| Wales | (pseudo) Wales | Large | Terminated April 2006 | |
| Wales | (pseudo) Wales | Large | Terminated July 2006 | |
| Wales | (pseudo) Wales | Large | Terminated January 2008 | |
| Wales | (pseudo) Wales | Large | ||
| Wales | (pseudo) Wales | Large | Terminated February 2019 | |
| Wales | (pseudo) Wales | Large | Terminated June 2003 | |
| Wales | (pseudo) Wales | Large | Terminated July 2007 | |
| Wales | (pseudo) Wales | Large | Terminated October 2003 | |
| Wales | (pseudo) Wales | Large | Terminated September 2003 | |
| Wales | (pseudo) Wales | Large | Terminated September 2014 | |
| Wales | (pseudo) Wales | Large | Terminated January 2006 | |
| Wales | (pseudo) Wales | Large | ||
| Wales | (pseudo) Wales | Large | Terminated May 2017 | |
| Wales | (pseudo) Wales | Large | Terminated September 2009 | |
| Wales | (pseudo) Wales | Large | Terminated April 2002 | |
| Wales | (pseudo) Wales | Large | Terminated June 2005 | |
| Wales | (pseudo) Wales | Large | Terminated March 2003 |