Any tell tail signs to identify if its the bush or the ball joint Ewen?
You would need to get the car in the air Kris, with the bush failing normally the rubber starts to detach from the metal outer. With the ball joint that can be a bit more difficult to check but slight play is enough to create a knock.
We seem to sell more bushes than complete arms though.
Thanks mate, I will try and borrow Neilp at the weekend to help. He is much more mechanically minded than me I hope its a bush but I have a funny feeling it is the arm.