Complex sentence: To remove Price's head in such a way required skill which was consistent with the skills acquired by Knight in the course of her work as a meat slicer, and also required a steady hand at the relevant time.
Split into simpler sentences: To remove Price's head in such a way required skill, which was consistent with the skills acquired by Knight in the course of her work as a meat slicer. It also required a steady hand at the relevant time.