(25 Sep 2013, 3:16 pm)Adam Malarkey wrote Yeah it is probably just coincidence, but nevertheless a good spot by myself which would of went unnoticed otherwise, as for the "Ten" 6074 NK62 FDM and 6075 NK62 FDN also follow this little pattern.
A good spot? There's no pattern here or with the Ten. As Daniel said its just a coincidence that the batch includes BCO and BDO etc. There must be countless examples of buses in a batch carrying matching final characters in their registrations without following a prescribed sequence and this certainly doesn't enable prediction of the rest of the series to be allocated. Often it seems they just take/receive the registrations that are available in order based on the first five characters - so in this case BX63B--. There were presumably no other BX63BC- available, so they're being allocated from BX63BD- and when they run out will move on to BX63BE-. The only reason we'd see, for example, BX63BEO would be if all of the available ones in sequence before that were unavailable.
Incidentally, does anyone know why these lot have BX registrations? Have they been diverted from another intended allocation or are all of GNE new deliveries registered through Birmingham now?