Since introducing the first modular spiral stair in 1972, Crescent of Cambridge have grown dramatically, and for many years now have dominated the spiral stair design market. Certainly, other companies have tried to copy Crescent's modular approach, but no one has the range of products, skills, experience or powerful customised computer software, to enable them to match our service - we have maintained out position as the leading spiral staircase manufacturer. It should be remembered that Crescent of Cambridge also manufacture straight flight and Helical stairs and are therefore able to meet any stair requirement.