<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by fbgdavidson:
I believe VS combine Premium Economy and Upper Class (the equivalent of Business Class) on the Upper Deck, though VS flyers correct me if I am wrong as I have never flown VS</font>
I think LHR Virgin planes combine UC and PE and LGW planes are all PE on the upper deck.
I remember seeing some old BA 747-200 seat maps from the Paper Timestable Circa 1996 which actually had 3x3 economy seats in the bubble.