| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated February 2009 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated July 2011 | |
| Wales | (pseudo) Wales | Small | Terminated July 1995 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated January 2007 | |
| Wales | (pseudo) Wales | Small | Terminated January 2006 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated October 2010 | |
| Wales | (pseudo) Wales | Small | Terminated July 2006 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated May 1994 | |
| Wales | (pseudo) Wales | Small | Terminated May 1994 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small |