Adult Social Care Glossary, v 0.6

16 (1) The relevant person meets the best interests requirement if all of the following conditions are met.

(2) The first condition is that the relevant person is, or is to be, a detained resident.

(3) The second condition is that it is in the best interests of the relevant person for him to be a detained resident.

(4) The third condition is that, in order to prevent harm to the relevant person, it is necessary for him to be a detained resident.

(5) The fourth condition is that it is a proportionate response to—
(a) the likelihood of the relevant person suffering harm, and
(b) the seriousness of that harm,

for him to be a detained resident.