Frequency of postcode additions to the database

HI, I’ve been successfully using geocoder to get the distance between two postcodes for well over a year but recently it fails on one particular postcode. On investigation, I find this postcode is on a new build estate so has only recently been issued with postcodes.

Royalmail can (obviously) locate it as can Google, so my question is how often is your database updated?

I can of course provide the full postcode if that is permitted.

Thanks for reading