Dapol have produced a very nice model of the later BR design banana van. These wagons were similar to ordinary box and fruit vans, but adapted with added insulation and sealing doors specially for the transport of imported bananas.
These vans ran in trains of varied length, according to the destination demands and could also be seen running singly to deliver smaller loads. When not needed for banana traffic the vans would sometimes be used for other 'clean' goods.