20.—(1) A document is executed by a CIO—
(a)by the affixing of its common seal; or
(b)whether or not the CIO has a common seal, in accordance with paragraph (2).
(2) A document is validly executed by a CIO if it is signed—
(a)where the CIO has more than one charity trustee, by at least two of the CIO’s charity trustees; or
(b)where the CIO has only one charity trustee, by that charity trustee.
(3) A document—
(a)signed in accordance with paragraph (2); and
(b)expressed, in whatever words, to be executed by the CIO,
has the same effect as if executed under the common seal of the CIO.
(4) In favour of a purchaser a document is to be treated as duly executed by a CIO if it purports to be signed in accordance with paragraph (2).
(5) For the purposes of paragraph (4), “purchaser” means a purchaser in good faith for valuable consideration and includes a lessee, mortgagee or other person who for valuable consideration acquires an interest in property.
(6) References in this regulation to a document being (or purporting to be) signed by a charity trustee are to be read, in a case where a body corporate is a charity trustee, as references to the document being (or purporting to be) signed by an individual authorised by the body corporate to sign on its behalf.