The plaintiff security company contracted with the defendant company to provide security guard services at the defendant's industrial premises. The written contract included standard conditions, including Clause 6 which restrained the defendant from engaging any of plaintiff's employees during the contract period or within twelve months thereafter. While the contract was subsisting, the defendant cancelled it by letter without giving one month's notice as provided in the agreement. The defendant subsequently employed two of the plaintiff's guards who had previously worked at the defendant's premises. One of these guards had been stationed at another client's premises (Govan's of Norton), which was subsequently broken into after the guard deserted his post. The plaintiff sued for damages totaling $312,553.40, comprising: (a) unpaid invoices and damages for breach of contract ($12,553.40), and (b) $300,000 for breach of contract, which included training costs for replacement guards, losses arising from the theft at Govan's premises, and consequential losses from the defendant's employment of the two guards. The defendant contended that the cancellation was justified due to various breaches by the plaintiff, including guards being suspected of pilfering and failure to dispatch or supervise guards properly.