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] The site, which was further extended by wooden huts during the Second World War, became the Amersham General Hospital in 1948.

[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.