The figures (all vintage ones) are:
FN/180 Officer, pointing
FN/181 Gunner, with porte-fire
FN/184 Gunner, with pair of hand-spikes
FN/185 Gunner, with ammunition bag
When I pulled out my other gun crew (painted ten years ago) I realised that I’d made a few mistakes with the uniform. This meant I had to do a little bit of updating so that both crews matched, and I also re-varnished them in gloss to conform to the new house style.
Footnote: FN/85 Gunner, with ammunition bag does not appear in my old Hinton Hunt catalogue (circa 1974). My suspicion is that the listing was left off in error as it should be at the bottom of page 2, the figure is certainly a vintage one.