| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated December 1997 | |
| Wales | (pseudo) Wales | Large | Terminated September 2010 | |
| Wales | (pseudo) Wales | Large | Terminated May 2006 | |
| Wales | (pseudo) Wales | Large | Terminated April 2006 | |
| Wales | (pseudo) Wales | Large | Terminated January 2006 | |
| Wales | (pseudo) Wales | Large | Terminated August 2006 | |
| Large | Terminated August 2011 | |||
| Wales | (pseudo) Wales | Large | ||
| Wales | (pseudo) Wales | Large | Terminated October 2011 | |
| Large | Terminated November 2009 | |||
| Large | Terminated February 2011 | |||
| Wales | (pseudo) Wales | Large | Terminated May 2013 | |
| Large | Terminated October 2010 | |||
| Large | Terminated October 2010 | |||
| Large | Terminated December 2010 | |||
| Wales | (pseudo) Wales | Large | Terminated August 2012 | |
| Wales | (pseudo) Wales | Large | Terminated November 2012 | |
| Wales | (pseudo) Wales | Large | Terminated May 2013 | |
| Wales | (pseudo) Wales | Large | Terminated August 2013 | |
| Wales | (pseudo) Wales | Large | Terminated February 2017 |