13(1)Section 10 is amended as follows.
(2)In subsections (1), (2), (4) and (5) for “Secretary of State”, in each place it occurs, substitute “appropriate national authority”.
(3)In subsections (1), (2) and (5) for “local authority”, in each place it occurs, substitute “building control authority”.
(4)In subsection (1) after “(2)” insert “, (3A)”.
(5)In subsection (2) omit “he, they or”.
(6)In subsection (4) omit “himself”.