As usual now, there are separate documents for use in England and in Wales. See also: Foreign-language information leaflets.
The following leaflets can be accessed by clicking on the link at the bottom of the page:
Detention under Part 2
Sections 135 and 136 ('Place of safety')
Detention under Part 3
Guardianship
Supervised community treatment (SCT)
Miscellaneous
Mental Health Act 1983 information leaflets on Department of Health website
All leaflets
Booklets and Leaflets on Welsh website