Well initial investigation is that the master cylinder is ok, we opened the bleed screw on the slave cylinder and the pedal pressed,loosing all the fluid in the process! Thought I had some more but can't find it, so will do that tomorrow. However, while the engine is running,it is possible to go through all the gears,but they are not engaging,is this because there is no pressure in the clutch,so the friction plate isn't engaging ? Never messed with clutch /g/box before !