The first plastic water and gas pipes were installed in the late 1960s. Some of these pipes are now beyond their design life and therefore due for scheduled replacement. Plastics when buried in the ground gradually lose their functional properties such as ductility. Gnosys, as polymer experts, believe there are some cost effective and practical ways to improve the properties of these pipes in-situ. This will extend the pipe life, save future replacement costs and all UK customers will benefit.