4In section 45 (disposals in relation to which ss.46 to 51 apply, etc.)—
(a)in subsection (1), for paragraphs (a) to (c) substitute—
“(a)the freehold of a house has been conveyed by a public sector authority; and
(b)the conveyance enabled the vendor to recover from the purchaser a service charge.”; and
(b)in subsection (2), omit the words from "(a) the" to "; and (b)".