| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated October 2002 | |
| Wales | (pseudo) Wales | Large | Terminated December 1997 | |
| Wales | (pseudo) Wales | Large | Terminated June 1998 | |
| Wales | (pseudo) Wales | Large | Terminated December 1997 | |
| Wales | (pseudo) Wales | Large | Terminated December 1992 | |
| Wales | (pseudo) Wales | Large | Terminated June 2000 | |
| Wales | (pseudo) Wales | Large | Terminated November 2006 | |
| Wales | (pseudo) Wales | Large | Terminated June 1999 | |
| Wales | (pseudo) Wales | Large | Terminated June 2012 | |
| Wales | (pseudo) Wales | Large | Terminated June 1999 | |
| Wales | (pseudo) Wales | Large | Terminated October 2005 | |
| Wales | (pseudo) Wales | Large | Terminated June 1998 | |
| Wales | (pseudo) Wales | Large | Terminated October 2003 | |
| Wales | (pseudo) Wales | Large | Terminated April 2012 | |
| Wales | (pseudo) Wales | Large | Terminated December 2001 | |
| Wales | (pseudo) Wales | Large | Terminated June 1999 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated June 1996 | |
| Wales | (pseudo) Wales | Large | Terminated April 2009 | |
| Wales | (pseudo) Wales | Small |