(1) A document is validly executed by a company as a deed for the purposes of section 1(2)(b) of the Law of Property (Miscellaneous Provisions) Act 1989 (c. 34) and for the purposes of the law of Northern Ireland if, and only if -
(a) it is duly executed by the company, and
(b) it is delivered as a deed.
(2) For the purposes of subsection (1)(b) a document is presumed to be delivered upon its being executed, unless a contrary intention is proved.