| Postcode | Country | County | Type | Status |
|---|---|---|---|---|
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated December 1981 | |
| Wales | (pseudo) Wales | Large | Terminated July 2015 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated June 2014 | |
| Wales | (pseudo) Wales | Large | Terminated December 2013 | |
| Wales | (pseudo) Wales | Large | Terminated May 2019 | |
| Wales | (pseudo) Wales | Large | Terminated December 1991 | |
| Wales | (pseudo) Wales | Large | Terminated December 1998 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated June 2014 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Large | Terminated July 1997 | |
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small | ||
| Wales | (pseudo) Wales | Small |