Had the plumber in today and have come across a problem with my stopcock. It basically won't close, stays open so he was going to replace it. As it's in a very awkward place he suggested repositioning it to a better place that's more accessible, ie underneath the sink. Now there's a 10mm earth on the consumer side which is fine but if this stopcock is to be done away with & repositioned, will the 10mm earth need to also be repositioned so it's on the consumer side of the new stopcock or is it fine to leave it where it is?