| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated February 2006 | |
| Wales | (pseudo) Wales | Large | Terminated March 2003 | |
| Wales | (pseudo) Wales | Large | ||
| Wales | (pseudo) Wales | Large | Terminated February 2017 | |
| Wales | (pseudo) Wales | Large | Terminated December 1991 | |
| Wales | (pseudo) Wales | Large | Terminated May 2007 | |
| Wales | (pseudo) Wales | Large | Terminated July 2006 | |
| Wales | (pseudo) Wales | Large | Terminated July 2006 | |
| Wales | (pseudo) Wales | Large | Terminated June 2008 | |
| Wales | (pseudo) Wales | Large | Terminated January 2007 | |
| Wales | (pseudo) Wales | Large | Terminated February 2010 | |
| Wales | (pseudo) Wales | Large | Terminated April 2008 | |
| Wales | (pseudo) Wales | Large | Terminated February 2009 | |
| Wales | (pseudo) Wales | Large | Terminated September 2009 | |
| Wales | (pseudo) Wales | Large | Terminated June 2011 | |
| Wales | (pseudo) Wales | Large | Terminated October 2007 | |
| Wales | (pseudo) Wales | Large | Terminated January 2008 | |
| Wales | (pseudo) Wales | Large | Terminated December 2018 | |
| Wales | (pseudo) Wales | Large | Terminated March 2017 | |
| Wales | (pseudo) Wales | Large | Terminated June 2009 |