15U.K.In section 21 of that Act, after subsection (4), there shall be inserted the following subsection—
“(4A)Where one party to any proceedings is a legally assisted person then—
(a)for the purposes of sections 16 and 17 of this Act, his costs shall be taken not to include either the expenses incurred on his behalf by the Legal Aid Board or the Lord Chancellor or, if he is liable to make a contribution under section 23 of the Legal Aid Act 1988, any sum paid or payable by way of contribution; and
(b)for the purposes of sections 18 and 19 of this Act, his costs shall be taken to include the expenses incurred on his behalf by the Legal Aid Board or the Lord Chancellor (without any deduction on account of any contribution paid or payable under section 23 of the Legal Aid Act 1988) but, if he is liable to make such a contribution his costs shall be taken not to include any sum paid or payable by way of contribution.”