| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Large | Terminated June 1996 | |
| Wales | (pseudo) Wales | Large | Terminated January 1995 | |
| Wales | (pseudo) Wales | Large | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated May 1994 | |
| Wales | (pseudo) Wales | Small | Terminated October 2003 | |
| 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 | Terminated January 2014 | |
| Wales | (pseudo) Wales | Small | Terminated December 2012 | |
| Wales | (pseudo) Wales | Small | Terminated May 1994 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | Terminated May 2017 | |
| Wales | (pseudo) Wales | Small | Terminated January 2014 |