We were most impressed with the professionalism showed by DWL from the very start to the very end of the process.Dan was very accomodating on the time that he came to see us as myself and my husband both have very busy jobs. The surveyor explained exactly what he was doing and I felt completely assured that if there had been a problem with installing the windows and doors I would have been informed straight away.The chap that fitted the windows was very courteous and tidy.Good job all round DWL i would have no hesitation in recommending you to family and friends, Kindest regards Lorraine Aruede.