Little did we know how much hard work this was going to be! Two months digging produced a variety of bricks, glass, pottery and old drains. Because the ground was so bad, we lined the pond with sand, then old carpet underlay and finally a good quality under-liner before laying the butyl liner. We sieved the soil from the pond and used it to level the rest of the garden. We never want to see a sieve again!
The finished pond is approx. 15ft x 8ft x 2 ft deep.