| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated January 1995 | |
| Wales | (pseudo) Wales | Small | Terminated January 1995 | |
| Wales | (pseudo) Wales | Small | Terminated January 1995 | |
| Wales | (pseudo) Wales | Small | Terminated July 1995 | |
| Wales | (pseudo) Wales | Large | Terminated January 1995 | |
| Wales | (pseudo) Wales | Small | Terminated June 1996 | |
| Wales | (pseudo) Wales | Small | Terminated July 1995 | |
| Wales | (pseudo) Wales | Small | Terminated July 1995 | |
| Wales | (pseudo) Wales | Large | Terminated December 1997 | |
| Wales | (pseudo) Wales | Large | Terminated December 1996 | |
| Wales | (pseudo) Wales | Large | Terminated December 1997 | |
| Wales | (pseudo) Wales | Large | Terminated May 2001 | |
| Wales | (pseudo) Wales | Large | Terminated February 2013 | |
| Wales | (pseudo) Wales | Large | Terminated February 2001 | |
| Wales | (pseudo) Wales | Large | Terminated June 2008 | |
| Wales | (pseudo) Wales | Large | Terminated March 2006 | |
| Wales | (pseudo) Wales | Large | Terminated October 2011 | |
| Wales | (pseudo) Wales | Large | Terminated November 2013 |