The dumps that OSM has imported (and still is slowly importing, when I
get around to it), were provided directly by the DfT via their NaPTAN
download site, which always contains the current dataset (I believe
updated at least daily).
I will continue to import the dataset that is dated as 1st
As the person who arranged the NaPTAN data supply for OSM - which Ito then
managed in a technical sense - I can confirm that it will remain possible
for OSM to take occasional downloads of data for NaPTAN. Whether you want
to do so through data.gov.uk where they appear to have taken a snapshot of
