i had the car looked at yesterday by a mechanic friend of mine and he's found out where the water is coming in, there is a rubber seal which runs along the top of the windscreen and down each windscreen pillar, this seal then fits over another seal which runs along the top of the sill, what appears to be happening is water is running down between this seal and the door and then entering the car at the end of the black plastic cover which fits over the bottom seal. I priced this seal up at Scotthall's and was told it was £218!!!, the bottom seal was £50 so for both sides plus the seal over the windscreen equates to £318!! not very impressed. :x