| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated May 2005 | |
| Wales | (pseudo) Wales | Large | Terminated April 2002 | |
| Wales | (pseudo) Wales | Large | Terminated June 1998 | |
| Wales | (pseudo) Wales | Large | Terminated December 1998 | |
| Wales | (pseudo) Wales | Large | Terminated January 2006 | |
| Wales | (pseudo) Wales | Large | Terminated December 2002 | |
| Wales | (pseudo) Wales | Large | Terminated January 2006 | |
| Wales | (pseudo) Wales | Large | Terminated December 1997 | |
| Wales | (pseudo) Wales | Large | Terminated February 2001 | |
| Wales | (pseudo) Wales | Large | Terminated December 1998 | |
| Wales | (pseudo) Wales | Large | Terminated December 1996 | |
| Wales | (pseudo) Wales | Large | Terminated August 2013 | |
| Wales | (pseudo) Wales | Large | Terminated April 2009 | |
| Wales | (pseudo) Wales | Large | Terminated May 2006 | |
| Wales | (pseudo) Wales | Large | Terminated April 2009 | |
| Wales | (pseudo) Wales | Large | Terminated July 2007 | |
| Wales | (pseudo) Wales | Large | Terminated June 2009 | |
| Wales | (pseudo) Wales | Large | Terminated June 2009 | |
| Wales | (pseudo) Wales | Large | Terminated July 2007 | |
| Wales | (pseudo) Wales | Large | Terminated August 2006 |