| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Small | Terminated December 1996 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated August 2011 | |
| Wales | (pseudo) Wales | Large | Terminated September 2008 | |
| Wales | (pseudo) Wales | Large | Terminated April 2003 | |
| Wales | (pseudo) Wales | Large | Terminated October 2008 | |
| Wales | (pseudo) Wales | Large | Terminated June 2012 | |
| Wales | (pseudo) Wales | Large | Terminated September 2007 | |
| Wales | (pseudo) Wales | Large | Terminated July 2006 | |
| Wales | (pseudo) Wales | Large | Terminated July 2006 | |
| Wales | (pseudo) Wales | Large | Terminated March 2002 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated May 2001 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small |