| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated May 2002 | |
| Wales | (pseudo) Wales | Large | Terminated June 2009 | |
| Wales | (pseudo) Wales | Large | Terminated January 2008 | |
| Wales | (pseudo) Wales | Large | Terminated June 2009 | |
| Wales | (pseudo) Wales | Large | Terminated January 2016 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated May 2006 | |
| Wales | (pseudo) Wales | Large | Terminated October 2003 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small |