Post-operative pain management following laparoscopic bariatric surgery can be challenging. There are concerns regarding the use of opioids. The rate of cardiorespiratory problems following neuraxial opioids is unclear. There is little published data on their use in bariatric surgery. This study aimed to assess technique feasibility, pain outcomes, patient acceptability, and the side effects and complications of a 'high-dose' (1.0 mg) intrathecal diamorphine technique for patients undergoing primary laparoscopic bariatric surgery.