In this Chapter—

• “relevant Health Board” means, in relation to a patient of such description as may be specified in regulations, the Health Board, or Special Health Board—

  1. a

     of such description as may be so specified; or

  2. b

     determined under such regulations; and

• F1“relevant patient” means a patient whose detention in hospital is authorised by—

  1. a

     if the patient is also subject to a restriction order, a compulsion order,

  2. b

     a hospital direction, or

  3. c

     a transfer for treatment direction.

In this Chapter, a reference to a hospital may be read as a reference to a hospital unit.

For the purposes of this Chapter, “hospital unit” means any part of a hospital which is treated as a separate unit.