The submissions relate to the legal effect of certain provisions of The Auctioneers and Commission Agents Acts 1922 to 1951 Q., and in particular to the provisions of s. 23 (1) (b) of that Act. Paragraph (b) now provides that: "A commission agent shall not be entitled to sue for or recover or retain any fees, charges, commission, reward, or other remuneration for or in respect of any transaction, unless his engagement or appointment to act as commission agent in respect of such transaction is in writing signed by the person to be charged with such fees, charges, commission, reward, or remuneration, or his agent or representative". The words "act as commission agent" were substituted for the words "act as agent" by s. 12 of The Auctioneers and Commission Agents Acts Amendment Act of 1936 Q. and the words "or retain" were inserted by s. 13 of The Auctioneers and Commission Agents Acts Amendment Act of 1951 Q.. The same section of the Act of 1951 introduced a second sub-section into s. 23 but its contents are not material to these reasons and need not be referred to. The Act of 1936 also substituted a new definition of commission agent in s. 4 of the Act for the original definition. The original definition so far as material, provided that unless the context otherwise indicated "commission agent" means: "Any person who, within a district in which the provisions of this Act relating to commission agents are in force, as an agent for others, whether on commission or for or in expectation of any fee gain or reward, and either alone or in connection with any other business, exercises or carries on the business or advertises or notifies that he exercises or carries on the business of buying selling or letting houses land or estates, or negotiating for such buying selling or letting, or buying or selling hotel businesses boarding-house businesses store-keeping businesses manufacturing businesses or trading businesses whatsoever or any interest in any of such businesses or buying or selling live stock". The definition substituted by the Act of 1936 converted this definition into par. (b) and inserted ahead of it par. (a) which reads "is a motor dealer". The definition was further amended by the Act of 1951 by striking out the words "within a district in which the provisions of this Act relating to commission agents are in force". The Act of 1936 also introduced the following definition of "motor dealer" into the principal Act: "Any person who - (a) On his own behalf, and either alone or in connection with any other business, exercises or carries on the business or advertises or notifies that he exercises or carries on the business of buying or selling (including the letting or selling upon a hire-purchase agreement within the meaning of "The Hire-purchase Agreement Acts, 1933 to 1934"), used or second-hand motor vehicles, and/or (b) As an agent for others, and whether on commission or for or in expectation of any fee, gain, or reward, and either alone or in connection with any other business, and either generally or in respect of any one transaction, exercises or carries on the business, or advertises or notifies that he exercises or carries on the business, of buying or selling (including the letting or selling upon a hire-purchase agreement within the meaning of "The Hire-purchase Agreement Acts, 1933 to 1934"), used or second-hand motor vehicles".