“(1) In this Chapter references to the administrator, in relation to a retirement benefits scheme, are to the person who is, or the persons who are, for the time being the administrator of the scheme by virtue of the following provisions of this section. (2) Subject to subsection (7) below, where – (a) the scheme is a trust scheme, and (b) at any time the trustee, or any of the trustees, is or are resident in the United Kingdom, the administrator of the scheme at that time shall be the trustee or trustees of the scheme. … (9) In this section – (a) …. (b) references to the trustee or trustees, in relation to a trust scheme and to a particular time, are to the person who is the trustee, or the persons who are the trustees, of the scheme at that time; …”
“the approval of the scheme being withdrawn under section 591B(1)”, are not ambiguous. They would be ambiguous if they comprised only “the approval of the scheme being withdrawn” without the last words: “under section 591B(1)”