Hi geronimo, I did a report a few months back for someone who came to the forum with a very similar problem to yours, as has already been mentioned it would probably be worthless in court but he did present it, via a solicitor, to the company/ tiler that did the work and as a result they had all the money refunded, (apart from the cost of the tiles) and the old floor removed. The problem isn't fully resolved yet (another story) but the long and short of it is, I will be re-tiling it for them in a few weeks. So a report by a professional isn't worthless altogether, just not a great weapon if the case were to reach the court stage. Hope this gives you a bit of hope in your quest for a remedy. All the best Bri.