Wolverton Park in Buckinghamshire, once the home of the Royal Train has been developed by Places for People to provide 300 houses and apartments. Seventy-seven of the new homes have been built within the Grade II Listed Royal Train Shed (constructed in 1889) and the adjacent Triangle Building, which was the locomotive workshop. Many original features have been retained including the majestic cast iron windows which span the three floors. There is an emphasis on sustainability, with the developments having wind turbines to generate public lighting, solar panels on the roof and secondary glazing, ensuring the homes are energy efficient and environmentally friendly. The Royal Train Shed was suited to the heavy duty Series 90 vertical sliding system with arched heads; however the Triangle Building needed a different approach. An arched Series 45 bottom hung hinged casement was linked to a Series 90 vertical sliding unit to match the sight lines and provide full access to the outer window.