We used Oaktree Joinery originally for the extension to our listed cottage, including bi-fold doors, custom designed glass link between the old property and extension, and all windows. As we were so impressed with the quality of work and materials, we have continued to use Oaktree to replace most of our old windows over the past 6 years with heritage style units, which are a perfect match for our traditional cottage. Martin and Kevin have always been so knowledgeable and helpful and I have no hesitation in recommending Oaktree.