28. A justices' clerk or single justice shall not make an order under section 11(3) or section 38(1) unless–
(a)a written request for such an order has been made to which the other parties and any guardian ad litem consent and which they or their representatives have signed,
(b)a previous such order has been made in the same proceedings, and
(c)the terms of the order sought are the same as those of the last such order made.