Many years ago Cannon Fodder produced a range for the Irish Brexit of 1919. Included in that range were British infantry in greatcoats and tin hat. There was only one pose but it was one of the best sculpts Greg ever made, CF having very variable levels of quality.
I bought quite a few and probably still have some. If you like I can look to see what I have but that will be a month or so from now. I know Greg sold the range to someone in Oz, maybe Wartime? Someone on here will know.