See Mental Health Act 2007 Overview for further details of amendments made to the Mental Health Act 1983.

MHA 2007 sections which are not in force and MHA 1983 sections not yet amended

Change	MHA 2007 section which is not fully in force	Subsection	MHA 1983 (and other) sections yet to be amended
Organisation of Mental Health Review Tribunal changed 3/11/08 (partially)	s38 (Mental Health Review Tribunal - Organisation)	s38(3)(a)-(d)	s78
		s38(4)	s79
		s38(6), (7)(a), (8), (9)	sch 2 paras 3, 4, 5, 6

In-force status of Mental Health Act 2007

Consult the individual commencement orders for details: see Mental Health Act 2007 Overview. This table includes the effects of Commencement Orders 1 to 8. The effects of commencement orders 9 to 11 need to be added.

MHA 2007 section	When in force, and by which commencement order
1	partly 3/11/08 no 6; rem 3/11/08 no 7
2-16	3/11/08 no 7
17	1/4/08 no 4
18	power 1/4/08 no 4; partly 1/4/08 no 4; rem (England) 3/11/08 no 7; rem (Wales) 3/11/08 no 8
19-20	1/10/07 no 3
21	England 3/11/08 no 7; Wales 3/11/08 no 8
22	partly 1/4/08 no 4; rem 3/11/08 no 7
23-25	3/11/08 no 7 [s25(5) 1/4/08 no 4]
26	1/12/07 no 3
27-29	3/11/08 no 7
30	power 1/4/08 no 4; partly 1/4/08 no 4; rem (Wales) 3/11/08 no 8; rem (England) NIF
31	partly 3/11/08 no 7; rem NIF
32	power, partly 1/4/08 no 4; partly 3/11/08 no 6; rem 3/11/08 no 7
33-34	3/11/08 no 7
35	power 1/4/08 no 4; partly 1/4/08 no 4; rem 3/11/08 no 7
36	3/11/08 no 6
37	3/11/08 no 7
38	partly 3/11/08 no 7; rem NIF
39	partly 1/10/07 no 3; partly 1/4/08 no 4; partly 3/11/08 no 7; rem 28/10/08 no 9
40-42	1/10/07 no 3
43	1/1/08 no 3
44	30/4/08 no 5
45	24/7/07 no 1
46	1/10/07 no 3
47	1/4/08 no 4
48	3/11/08 no 7
49	1/10/07 no 3
50	partly 1/4/08 no 4; rem NIF
51	1/10/07 no 2
52-53	19/7/07 Act
54	1/4/08 no 4
55	partly 3/11/08 no 6; partly 3/11/08 no 7; rem NIF
56-59	19/7/07 Act
sch 1	partly 3/11/08 no 6; rem 3/11/08 no 7
sch 2	3/11/08 no 7 (Eng); 3/11/08 no 8 (Wales)
sch 3	partly, power 1/4/08 no 4; partly 3/11/08 no 6; rem 3/11/08 no 7
sch 4	3/11/08 no 7
sch 5	partly 1/10/07 no 3; partly 1/4/08 no 4; partly 3/11/08 no 7; rem 28/10/08 no 9
sch 6	3/11/08 no 7
sch 7	part 1/4/08 no 4; rem NIF
sch 8	NIF
sch 9	partly 1/4/08 no 4; rem NIF
sch 10	19/7/07 Act
11	partly 3/11/08 no 6; partly 3/11/08 no 7; partly (pt 7) 28/10/08 no 9; rem NIF