I have used this company several times over the years and would not hesitate to do so again. They go through all the options available to you and give professional advice. They then give a fixed quotation and leave you to think it through – no pushy sales pitch to try and get you to sign up straight away. The workmanship is of a high standard and after sales support is excellent. A key broke inside the lock of one window several years after we had it and they fixed for free.