Fanks mate.
Yeah, it's a rear bulkhead with shelving. It's constructed using hex-ply and has lots of tie-down straps/anchor points. It's quite utilitarian back there compared with the living area, but hopefully that means it'll be harder-wearing.
Essentially, it was designed to accommodate my bulky BBQ kit (double burner on legs, grill box and pizza oven), but there's just about enough room for the rest of the camping gear, barring a couple of pillows, which we carry in the "wardrobe". I think the key is we can use the whole of the height of the van for storage without fear that it'll all come tumbling out when the tailgate is opened.