I found this.
Prestwich is just north of Manchester. Prestwich Asylum - see above
"The land chosen for the Hospital is in an area first known as Prestwich Wood in 1652. The land was owned by Thomas Compton until his death in 1776, when Nathaniel Milne bought the land, which then came into the possession of his son, Oswald in 1847. The Hospital was opened in 1851 to accomodate 500 patients, and originally built to face West with the main entrance on Clifton Road".
It had 500 patients in 1856.
1856 Report: " Each year the difficulties of receiving patients have increased, and numerous applications for admission have consequently been refused." Out of 58 deaths, 31 were general paralytics. [See Rainhill]
It had 510 patients in 1858.
"In 1863 it was extended to accommodate afurther 560 patients"
1881 Census: Medical officers were Herbert Rd Octavius Sankey, Henry George Murray and Benjamin Russell Baker (all surgeons)
1884 "the Annex was built. The Annex was built to house 1,100 patients and was served by bus due to it's distance from the main Hospital Site."
1889 Henry Rooke Ley, Prestwich, Superintendent of the County Lunatic Asylum at Prestwich.
"By 1903 the site could handle 3,135 patients from Salford,Manchester and South Lancashire, of which 50 per cent recovered and 6.57 per cent died."
1917-1919 Montagu Lomax assistant medical officer. Published The experiences of an asylum doctor in 1921. "He stated that the patients were poorly fed and poorly clad; that they were closely confined...that the nurses were mostly unqualified, unsuited to the nature of their work". He instanced specific cases of open cruelty to patients. (Jones, K. 1960 p.100)
by 1929 Lancashire County Mental Hopital
1949 Prestwich Hospital
early 1975 Manchester Mental Patients Union and Prestwich Hospital
20.11.1977 Minutes record aproach from Manchester Mental Patients Union about access.
6.12.1977 Manchester Mental Patients Union show film
5.4.1978 minutes record some continuing concern about Mental Patients Union access.
Since 1994: It is now the Mental Health Services of Salford, Bury New Road, Prestwich, M25 7BL. (map)
Prestwich Asylum link (archive)