20Each of the following is a relevant data-holder—
(a)the committee or other person or body of persons responsible for managing a clearing house for any terminal market in commodities,
(b)an auctioneer,
(c)a person carrying on a business of dealing in any description of tangible movable property, and
(d)a person carrying on a business of acting as an agent or intermediary in dealings in any description of tangible movable property.