After i managed to get the lift kit, new front and rear bumpers and wheels on the disco i took it out for an off road play day, when i got home noticed that there was engine oil leaking from the gear box and the fan belt guide pulley bearing had totally destroyed itself, so i repaired the pulley and investigated the oil leak further to find the rear crankshaft oil seal had gone, took the engine out to repair it and found that the clutch release fork was well worn, so £85 and a weekend later all is good with the disco again (touch wood)
Sorry for the long write up but here are some pics