Bob Olley
Bob Olley is a model maker who used to work for Games Workshop from 1987 to 1990. He also worked for Ral Partha from 1990 to 1997, and also worked for Reaper Miniatures (mostly on the Dark Haven lines).
You can almost immediately tell a model he made out of a line-up of older GW models: exaggerated silhouettes, impressive detail, and deliciously 80's over-the-top style. He was a mainstay of the Rogue Trader era, cranking out all manner of weird and wonderful models as fast as his hands could sculpt them. He's touched nearly every faction that existed at the time, including some that would die shortly after his leaving GW (Squats and Genestealer Cults).
Olleys Armies
Since 2003, Bob has been modeling small-time out of Somerset, from the family business Olleys Armies. With the help of his wife and son, Olley continues to make and sell excellent models in his inimitable style. Most of what gets made these days is funded by Kickstarter. Olleys Armies has a website, and a Facebook page.