Milton Keynes University Hospital (MKUH) opened in 1984 and most of the estate is now over 35 years old. In the oldest parts much of the roofing was coming towards the end of its manufacture life leading to water seeping into parts of the hospital.
The outdated materials were not energy efficient resulting in buildings losing heat in the winter and becoming too hot in the summer. This adversely affected staff and patients, led to high energy costs for the Trust and had a negative impact on the environment.