Abstract: Crop cutting apparatus providing a wide cutting path and even cutting while following variations in ground level. Known drum and disc mowers of wide cut do not follow variations in ground level, and are easily damaged by ground shocks. Cutter drums 29, 29' and gear boxes 41, 41' are mounted on subframes 16, 16', which are pivotally mounted on main frame 13 to allow independent vertical movement of the drums 29, 29'. Each drum 29, 29' is driven by a flexible belt drive 42, 42' from its gear box 41, 41' to protect the gear boxes from ground shock. The gear boxes 41, 41' are driven by a cross-shaft 48 from a tractor p-t-o. The drums are driven by untimed drive and clash of cutting knives 31, 31' is prevented by a spacing roller 102 which rolls over a cam plate 102' and forces the drums 29, 29' apart when the drums are cutting at the same level. Support members 9 and 9' move apart on cross members 21, 21' and are linked together by tie bar 103 to give overlap of cutters when cutting at different levels.