good morning Gus thanks for the feedback, i have already paid the protek warranty which was over 3k, when the guy came up from england for inspection of the slab he asked who the principal designer was and i told him my mate who he then phoned up but he had no PII so wasnt able to do it, next i had contacted the SE firm and the guy who inspected the trenches to see if he would take on the role, he said he would check his PII and get back to me that was 2 weeks ago, i tried to phone him on Monday but no reply, are there and structural engineers or architects i could get to look over the drawings and take on the role for a fee perhaps?