(1) Subject to this Act, if goods are sold by a person who is not the owner of them and does not sell them under the authority or with the consent of the owner, the buyer does not acquire a better title to the goods than the seller had unless the owner of the goods is, by the owner's conduct, precluded from denying the seller's authority to sell.
(2) Nothing in this Act affects—
(a) the provisions of the Mercantile Law Act 1962
or the Registration of Interests in Goods Act 1990
; or
(b) the validity of a contract of sale under a special common law or statutory power of sale or under the order of a court of competent jurisdiction.