Returns the closest location for the specified post code. The postcode is normalised before the
search by removing spaces and converting to a common case. Non alpha-numeric characters are removed.
The search is then done in three stages: - An exact match is attempted
- If this fails then a partial search is made using the first 4 characters
- If this fails then a partial search is made using the first 3 characters
If none of these searches yield a match then 'null' is returned to the application. |