| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated September 2002 | |
| Wales | (pseudo) Wales | Large | Terminated January 2002 | |
| Wales | (pseudo) Wales | Large | Terminated July 2001 | |
| Wales | (pseudo) Wales | Large | Terminated June 1999 | |
| Wales | (pseudo) Wales | Large | Terminated July 1997 | |
| Wales | (pseudo) Wales | Large | Terminated June 1999 | |
| Wales | (pseudo) Wales | Large | Terminated September 2002 | |
| Wales | (pseudo) Wales | Large | Terminated February 2009 | |
| Wales | (pseudo) Wales | Large | Terminated June 2000 | |
| Wales | (pseudo) Wales | Large | Terminated June 1999 | |
| Wales | (pseudo) Wales | Large | Terminated December 1988 | |
| Wales | (pseudo) Wales | Large | Terminated December 1982 | |
| Wales | (pseudo) Wales | Large | Terminated July 1997 | |
| Wales | (pseudo) Wales | Large | Terminated December 1995 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small |