Thanks for the reply, the water is about 12 inches deep but it's going down everyday. I've had a few pool companies come over the past two days, all say it's not a big problem. However, the quotes they are giving are around 450-500 k and we have to buy the tiles on top.. We already have the pump, filter and all fittings! It's a small pool and the digging has been done already. I think they are trying it on, as it seems very high for what is essentially labour.
Our original builders already put piling under the pool before they laid a concrete base to walk on.. I guess the water would have gone by now if there was no concrete there.
I called John, but he must have changed the number, the man who answered just said it was the wrong number.