At the time I started buying figures in earnest (1975 or thereabouts), Hinchliffe seemed to me the best, well detailed and well sculpted covering an interesting range. There was a serious quality about the figures as if meant for display in a museum set piece. I was surprised to discover they are still available in England.
Hinchliffe as a company began in 1967 producing larger scale artillery and equipment. These were often monstrous heavy cast metal kits that required a fair amount of assembly. At some point, figure sculptor Peter Gilder recently of Miniature Figurines came on board and began the range of historical figures in 25mm apparently meant to look imposing against the then current HO/OO scale figures put out by Airfix which are about 22mm.
The company expanded, became involved with Heritage Models down in Texas, and was eventually sold and sold again. They used to be the quality standard but tastes and standard scales seem to always be changing.