Thanks very much for your helpful suggestions .. I am (and should have written this originally) looking to have a raised pond constructed as opposed to a 'dug out' one. I would like this to be of a brick (or preferably stone) so I was looking to find a builder who is competent with this type of construction. As before, I was just concerned about getting someone who will build what he thinks is right only to find that it falls apart after a couple of years. This was why I was wondering if there are people who specialise in pond building.

Thanks again ..