From Mental Health Law Online
'These Regulations contain provisions about arrangements for the appointment of Independent Mental Health Advocates. They contain provisions about who may be appointed to act as an IMHA, and persons who may be visited and interviewed by an IMHA for the purpose of providing help to a Welsh qualifying patient who has been admitted under section 4 (admission for assessment in cases of emergency) of the Mental Health Act 1983' (extract from Explanatory Note). Made 18/10/11; in force on 2/4/12 in relation to Welsh qualifying informal patients, and otherwise on 3/1/12.
Mental Health (Wales) Measure 2010#26/10/11 (text of circular email)