23.—(1) This regulation applies where—
(a)a child is subject to a detention order,
(b)the child is detained in hospital under Part 3 of the 1983 Act, and
(c)immediately before the beginning of the detention in hospital, an individual development plan was neither being maintained nor being kept for the child under Part 2 of the 2018 Act.
(2) This regulation also applies where—
(a)on or after 1 September 2022—
(i)a young person is subject to a detention order,
(ii)the young person is detained in hospital under Part 3 of the 1983 Act, and
(b)immediately before the beginning of the detention in hospital, an individual development plan was neither being maintained nor being kept for the young person under Part 2 of the 2018 Act.
(3) The 2018 Act and other provisions under Part 2 of that Act (including these Regulations) apply with the modifications provided for in Schedule 2 in relation to the child or young person while that child or young person is subject to a detention order and detained in hospital under Part 3 of the 1983 Act (in particular, see section 13).