Lewis JA observed that the appellants had not applied to the police for new chassis numbers and that 'the remedy is in their hands'. The court also noted, obiter, that one cannot have a lien over one's own property, and that the claim to a lien was defective as it was not made in the alternative on the basis that the appellants were not the owners. Farlam JA, in the minority, observed that it is instructive to read s 68(6)(b) in conjunction with s 68(2)(b) and (3)(b), noting that those subsections penalize possession simpliciter of certain items (licence numbers, marks, documents), whereas s 68(6)(b) only penalizes possession 'without lawful cause', suggesting Parliament recognized that motor vehicles, being valuable property, required different treatment. Farlam JA also noted that the interpretation should accord with the presumption against changing the common law more than is necessary and that penal provisions should be construed strictly. He observed that Regulation 56 effectively combats the mischief associated with mutilated vehicles through criminal sanctions for non-compliance.