I had went in to Prestige Jaguar to see about a judder when braking hard from motorway speeds AND there was this noise that was happening every now n then {enough to annoy me,very minimum sound and very seldom,but I HAD to know} so after Dougy took her out for a short drive he popped it on the ramp and hey presto he found this.I must admit I still found it hard to see it with a light shining on it but he picked it out and that's another job well done/well two in fact.Thanks Dougy n Ian.