Thanks for the detailed explanation Tom, most of which I was aware of on the real life item.
My point is that as far as I recall, Dapol will only be producing a single catering vehicle.
Obviously for the HST this will be without buffers and with buffers for the loco hauled, so two catalog numbers per livery ?
Hattons show three catalog numbers for the blue grey, one with buffers, one without, and one with no comment that is £2 dearer as well.
I think you are correct and maybe Dave can enlighten us. I suspect Paddy is correct in that Hattons are getting confused with Dapols renumbering exercise.
Scott