All,
Right, i've confirmed everything is working correctly... Fuel is getting to the engine. The ignition is sparking as i've managed to get the motor is cough into life a couple of times but won't run. The valves arn't sticking and i'm getting a decent compression because when i manually turn the engine while pushing my finger into the spark plug holes (on all cyclinders) i can't turn the crank any further by hand on the compression stoke.
Andrew i'm going to have to call on the help that you most kindly offered. I think there something really silly that i'm missing, its probably something screaming at me but i can't see the wood for the trees. What i really can't understand is that nothing (timing wise) had changed since the last time i run the Old Girl.
Lesson for all keep your Land Rover running its less grief in the long run.
Adrian