Choor Singh J:

The plaintiffs are specialist subcontractors in civil engineering and are incorporated in Australia. They specialise in the prestressing and rock anchoring of building structures. The plaintiffs have an office in Singapore. On 24 July 1970 they appointed the defendant as their manager for South-East Asia. On 12 June 1971 the defendant resigned from the service of the plaintiffs. On 16 June 1971 the plaintiffs by an ex parte application obtained an interim injunction against the defendant restraining him from doing any of the following acts until the hearing of a motion for an order that the said injunction do continue until the trial of this action:

(1) utilizing or in any way profiting from the information or knowledge which has been communicated to the defendant by the plaintiffs or obtained by the defendant in the course of his employment with the plaintiffs as the plaintiffs' South-East Asia manager stationed in Singapore;

(2) interfering and intermeddling with the plaintiffs' business or its servants or workmen or agents;

(3) directly or indirectly engaging or concerning himself in and business of the kind carried on by the plaintiffs, within Singapo