11. Who may enter into a controlled goods agreement
(1) Subject to paragraph (2), a controlled goods agreement, as defined by paragraph 11(4) of Schedule 1, may only be entered into by an enforcement agent and —
(a) a debtor who is not a child;
(b) a person, aged 21 or over, authorised by the debtor to enter into a controlled goods agreement on the debtor's behalf; or
(c) a person in apparent authority who is on the premises, where those premises are used (whether wholly or partly) to carry on a trade or business.
(2) The enforcement agent may not enter into a controlled goods agreement with the debtor or another person who it appears (or ought to appear) to the enforcement agent does not understand the effect of, and would therefore not be capable of entering into, such an agreement.