All the datasets within Prospex work to a common Royal Mail update and correspond to one another. 

• These updates relate to the Post Office systematically changing postcodes and postcode boundaries in relation to new building developments and postcode reorganisation.

• Locus point set mapping module is updated with postcode changes. 

• Geodemographic classifications are updated annually using Electoral Roll information and other datasets. 

The above three datasets are all updated at the same time, offering as little disruption as possible to the user of the system. 

Mapping data is updated whenever new datasets are provided by the AA, NavTech and Ordnance Survey.