| 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 June 1999 | |
| Wales | (pseudo) Wales | Large | Terminated December 1998 | |
| Wales | (pseudo) Wales | Large | Terminated June 2000 | |
| Wales | (pseudo) Wales | Large | Terminated January 2007 | |
| Wales | (pseudo) Wales | Large | Terminated May 2011 | |
| Wales | (pseudo) Wales | Large | Terminated August 2010 | |
| Wales | (pseudo) Wales | Large | Terminated August 2012 | |
| Wales | (pseudo) Wales | Large | Terminated September 2016 | |
| Large | Terminated January 2005 | |||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated June 1997 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small |