| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| 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 | Large | Terminated August 2006 | |
| Wales | (pseudo) Wales | Small | Terminated September 2000 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated September 2000 | |
| Wales | (pseudo) Wales | Small | Terminated September 2000 | |
| Wales | (pseudo) Wales | Large | Terminated March 2009 | |
| Wales | (pseudo) Wales | Large | Terminated September 2000 | |
| Wales | (pseudo) Wales | Large | Terminated September 2000 | |
| Wales | (pseudo) Wales | Large | Terminated February 2004 | |
| Wales | (pseudo) Wales | Large | Terminated February 2008 | |
| Wales | (pseudo) Wales | Large | Terminated November 2002 | |
| Wales | (pseudo) Wales | Large | Terminated June 2011 | |
| Wales | (pseudo) Wales | Large |