Havering Hospital NHS Trust in Romford, consists of a collection of buildings that have grown over the years as the services provided at the Oldchurch and Harold Wood hospitals have changed. The sites have examples of all but the most modern and efficient buildings.

In common with most large Trusts, heating at Oldchurch Hospital had come from a central boilerhouse which produced steam, which was then used to heat DHW and LPHW systems. Lapses in water treatment had damaged pipelines and calorifiers. Under this new project, the old steam boiler plant at Oldchurch Hospital was replaced with modern efficient disaggregated, gas-fired, modulating boilers, leading to substantially reduced maintenance requirements and release of a parcel of six acres of land for alternative use or sale. The plant was housed in a series of strategically placed, self-contained, acoustic modules, to meet building demands, and shorten LPHW pipe-runs and distribution losses. In addition, extensive controls, and a modern high-frequency lighting retro-fit helped generate energy electricity and maintenance savings at both the Oldchurch and Harold Wood Hospital sites.

As an early example of an Energy Services Performance Contract under the Government's PFI programme it was designed to be self-funding over 10 years, with Honeywell Ltd as the main contractor. Nick Ray, director of Cynergin, was project leader, and had these comments:
"This was one of the first performance contracts in the NHS, and many lessons were learned. Efforts were made to introduce both supply-side and demand-side economies into the project, and this was quite unique at the time. Hot water consumption at the hospital was underestimated, and Honeywell had to install additional plant, at its own expense, under the terms of the Project Agreement. This proved the need for extensive detailed surveys to be completed before a contract is entered into and, for the Trust, the very real value of the performance guarantee. This project also proved exactly why ESPC's have become so popular in the NHS: it is a risk to expend millions of pounds in modernising infrastructure, when the energy savings to pay for it, can only be proved after the money is spent. ESPC's solve this dilemma and Cynergin are the UK's experts in developing ESPC's so that the interests of the Contractor and end-user are both well served and a successful partnership is forged.”