This vintage Billingham 335 bag has had a few modifications, specifically extra loop material installed so that dividers can be configured to various positions.

The padded base and dividers are all custom made. I've included some extra ones.

Notice this bag has brass studs on the bottom, this not the case of many others.

The images with the camera equipment are just to give an indication of the size of the kit it can take, obviously none of this is included.