Just to go back to the conversation about the bomb bay from earlier, I wanted to say a) thanks, James, for including a photo of this area, and b) thanks to everyone who provided information on the bomb bay of a Wellington.
I think I was a bit vague on what I was after initially. My point was that the instructions did not clearly show that the whole bay was divided into three of almost equal width. Airfix appear to have provided just 6 bombs, three each for the outer two sections, and none for the middle section. For those who have this kit, I guess this is correct. In fact, the instructions seem to suggest there is not enough room for a set of bombs in the middle section, even if one has spares available.
I have many references that I can consult here. The Haynes manual has one or two good photos, but the best is the 4+ Publications book which includes a set of loading diagrams for a whole variety of bomb loads, so this will be my reference once I get the kit.