8Where—
(a)a person who is authorised under a network access agreement to do so uses the network for the making of a disposition or contract, and
(b)the document which purports to effect the disposition or to be the contract—
(i)purports to be authenticated by him as agent, and
(ii)contains a statement to the effect that he is acting under the authority of his principal,
he shall be deemed, in favour of any other party, to be so acting.