Third party proceedings can be an efficient, and cost-effective way of adding parties and any related claims arising from the same set of facts. Rule 29.02 provides the time constraints for when third party claims must be issued: within ten days after the delivery of a statement of defence, within ten days after the plaintiff delivers a reply in the main action, or at any time after this, either with the plaintiff’s consent or with leave of the court.[1]Leave must be granted by the court according to the Rule, unless the plaintiff would be prejudiced thereby, which the court has interpreted as needing to be “more than a mere inconvenience”.