An infirmary, which replaced the limited medical facilities in the local workhouse, was built at a cost of £3,400 with 34 beds and opened in 1906.[1] It was renamed St Mary's Hospital in 1924 and extended in 1929.[1] The site, which was further extended by wooden huts during the Second World War, became the Amersham General Hospital in 1948.[1]
A new building to accommodate out-patients and casualties was opened in 1959, a new geriatric block was opened in 1967 and a new suite of operating theatres was opened in 1983.[1] The Haleacre unit, which is guarded by high metal fencing and visibly secure fixtures and fittings inside and provides in-patient care for mentally ill people,[2] opened in 1992.[1]
A redevelopment scheme over much of the site was procured under a Private Finance Initiative contract in the late 1990s. The construction work was carried out by Taylor Woodrow and completed in 2000 as part of a scheme across the South Buckinghamshire hospitals at a cost of some £45 million.[3][4]