Marathon did a fantastic job for me, replacing a new but badly designed and installed bay window which had been put in only a few weeks before, by the builders working on my garage conversion. So pleased I made the decision to get this work redone by a professional company. The new window is well fitted and the design is good, and meets my specification. Both Tony and James were extremely helpful in supporting me to make various informed decisions, without me feeling pressurised at all. Stan the installer was also very knowledgeable about his job and paid great attention in order to get every aspect of the installation correct. I thoroughly recommend.