However, the postcode is reused by other organizations for many other purposes.
- Postcode used in pension sums
- Postcode "lottery" - home insurance, GP services, social care, cancer treatment, ...
For this reason, some residential communities have appealed to the Royal Mail to have their postcode changed.
- Residents of Windsor don't like having a Slough postcode [January 2003].
- Residents of Ilford want to have a London postcode, which they feel will enhance their property values [April 2005].
- A village near Coventry wishes to have a rural postcode rather than be classified as a suburb of Coventry [July 2008].