20 The provision in s 5(1) of the OPDC Act that, subject to the Act, a "successful defendant" is entitled to his costs, is qualified by s 4(2) in which a defendant is described as "successful", if the charge against him or her is dismissed, withdrawn or struck out, or a conviction on such charge is quashed. In my opinion, contrary to the view expressed by the learned Judge in par 28 of his reasons, the words "unless the contrary intention appears" in s 4(1) have no application to s 4(2). On the face of it, therefore, s 4(2) of the OPDC Act set out the circumstances in which costs can be awarded to "a successful defendant" but, as expressed in s 5(1), are subject to the Act. Given that the respondent was not a successful defendant as defined in s 4(2), the question which then arises is whether that provision contains an exclusive definition of a successful defendant for the purposes of s 5.