Help/advice please. Im a basic gardener. Im on with a garden "project" which has involved me removing a number of paving slabs and moving them, where the patio was im going to lay new turf. The problem ive got is once the patio is up ive found the soil underneath is very poor clumpy clay which has just been holding water/puddles when it rains overnight. Im assuming the roof on the turf will struggle to take to this, what am i best doing. Ive read a couple of conflicting articles. One of them suggested putting gravel/stones in the soil and mix it in to break it up a bit. However somewhere else said this is a big no no. I have a huge sack with old decorative border stones which is going in the skip, should i mix some of this in? Another article suggesting adding something like hay/straw to the clay Am i best off digging it up and breaking it up as much as possible then adding a coating of top soil over the top prior to the turf. Any views opinions or experiences appreciated. Thanks in advance.