| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Small | Terminated April 2020 | |
| 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 March 2006 | |
| Wales | (pseudo) Wales | Large | Terminated September 2013 | |
| Wales | (pseudo) Wales | Large | Terminated December 1998 | |
| Wales | (pseudo) Wales | Large | Terminated June 1998 | |
| Wales | (pseudo) Wales | Large | Terminated June 1999 | |
| Wales | (pseudo) Wales | Large | Terminated June 2012 | |
| Wales | (pseudo) Wales | Large | Terminated December 2018 | |
| Wales | (pseudo) Wales | Large | Terminated June 2011 | |
| Wales | (pseudo) Wales | Large | Terminated July 2004 |