A prospective randomized controlled trial with two arms i.e. thoracoscopic poudrage alone (standard care) versus combined thoracoscopic poudrage and tunnelled pleural catheters. The tunnelled catheters will be inserted at the time of thoracoscopy in the endoscopy centre under ultrasound guidance. The trial is aimed to be completed within 3 years. Primary end-points will be pleurodesis success. The secondary end-points are hospital length-of-stay, complication rates, analgesia requirements, pain scores and quality-of-life scores. Based on power calculations, we aim to recruit 120 patients in each arm.