Clutch judder

[Loz]

I've found an incorrectly adjusted chain can cause the kind of judders you describe, maybe worth checking.

Dont think its that, the clutch was like it when i got the bike and i have fitted new chain and sprocket since and the chain tension has been checked but local mechanic too, just because it wasnt as straight forward as usual to get the tension right (huge difference between being on centre stand and being sat on it )