ok, had another drive in it today, its miles better, almost sorted (more driving required), its also curred the lumpy setting off from stand still, when pulling away from the lights it would take sort of two attemps to get the clutch in, now its there first time.
I was quoted £1,225 for a new clutch, diff was done under warranty, i love the warranty.
If you have warranty get the diff replaced first and go from there, its sorted mine!