Bryan Ansell the owner of
Citadel Miniatures bought
Games Workshop some time in the 80's (moving it to
Nottingham) and turned it into the company that created games such as
Talisman,
Warhammer, and Bloodbowl to encourage people to buy more
Miniatures. And because they owned the games only they had the right to create the lead figures. I don't know if they are separate companies or divisions of the same company now.
They also turned the Magazine White Dwarf (which used to be a good general role-playing magazine) into what amounts to a monthly Citadel Miniatures catalogue.