Edition 30 (57 Plate) rear knocking noise

[claire wright]

Hi, I have a intermittent knocking noise from rear passenger side, travelling at 30mph and under only. Car still under Warranty and VW have already re-aligned the tailgate, replaced a shock & rubber, but still it's there. They have no record of any fault and are currently baffled, while I am getting more and more irritated by it. Can anyone offer any advice, the car has only done 19K miles?