| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated October 2000 | |
| Wales | (pseudo) Wales | Large | Terminated February 2001 | |
| Wales | (pseudo) Wales | Large | Terminated July 2006 | |
| Wales | (pseudo) Wales | Large | Terminated January 2006 | |
| Wales | (pseudo) Wales | Large | Terminated May 2006 | |
| Wales | (pseudo) Wales | Large | Terminated September 2013 | |
| Wales | (pseudo) Wales | Large | Terminated October 2003 | |
| Large | Terminated February 2009 | |||
| Wales | (pseudo) Wales | Large | Terminated June 2014 | |
| Wales | (pseudo) Wales | Large | ||
| Large | Terminated July 2010 | |||
| Wales | (pseudo) Wales | Large | Terminated February 2019 | |
| Large | Terminated August 2010 | |||
| Wales | (pseudo) Wales | Large | Terminated February 2017 | |
| Wales | (pseudo) Wales | Large | Terminated February 2012 | |
| Large | Terminated May 2011 | |||
| Wales | (pseudo) Wales | Large | Terminated July 2017 | |
| Wales | (pseudo) Wales | Large | Terminated November 2013 | |
| Wales | (pseudo) Wales | Large | Terminated December 2015 | |
| Wales | (pseudo) Wales | Large |