First in Wales for top rated uPVC bay windows 2 3 4 5 6 Panel all A-Rated as standard for the very best in home improvements to add value quality affordable windows to your house and home in South West Mid Glamorgan. Bow & Bay Windows – A-Rated Veka uPVC Home Improvements get a local quote near you from the pro expert company Fensa registered for insurance backed guarantee that’s MPN.