Wahey, after making do for the last 4 - 5 weeks with a clutch that barely clears I finally got round to doing something. So put new master and slave cylinders and flexy hose on and it all works again, I can get it in gear whilst stationary :)
Of course it never goes that smoothly, the angle grinder had to come out for removing the slave and then just as I got all the old hydraulics off it started to rain :( but it all went back together last night.
Need to put some knobblier tyres on for Whitworth now :)