philmh: yes, i was just trying to see, in the absence of album cover or a "lpcat" listing of a decca licence release of a uk single lp of the other half, whether this cat# was created for the separate uk vol.1, or was for part of a decca licence release of the album as a uk double lp. with the later pye wb licence, pye generally used the merkin original cat# - but decca did not, creating their own cat#s - though they gave the merkin original in the small print, as a rule.
it's not unknown for uk record companies to issue a double lp both as two separately-catted single LPs, and as the double lp in an album.