| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated June 2008 | |
| Wales | (pseudo) Wales | Large | Terminated August 1997 | |
| Wales | (pseudo) Wales | Large | Terminated June 1998 | |
| Wales | (pseudo) Wales | Large | Terminated December 1999 | |
| Wales | (pseudo) Wales | Large | Terminated May 2002 | |
| Wales | (pseudo) Wales | Large | Terminated May 2006 | |
| Wales | (pseudo) Wales | Large | Terminated February 2019 | |
| Large | Terminated May 2009 | |||
| Large | Terminated August 2009 | |||
| Large | Terminated June 2009 | |||
| Large | Terminated January 2010 | |||
| Wales | (pseudo) Wales | Large | Terminated March 2015 | |
| Large | Terminated May 2010 | |||
| Large | Terminated December 2010 | |||
| Wales | (pseudo) Wales | Large | Terminated May 2012 | |
| Wales | (pseudo) Wales | Large | Terminated July 2013 |