Herbert Lom said...

according to Wikipedia :)

Hammer Films produced endless low-budget horror films. Lom recalled in one interview how producers expected actors to throw themselves into their work: "For one of my scenes, the Hammer people wanted me to smash my head against a stone pillar, because they said they couldn't afford one made of rubber", Lom reveals. "I refused to beat my head against stone, of course. This caused a 'big crisis', because it took them half a day to make a rubber pillar that looked like stone. And of course, it cost a few pennies more. Horror indeed!"