Comparison of Intrathecal Morphine With the Quadratus Lumborum Type 2 Block for Post-operative Analgesia Following Elective Caesarean Section (QLBvITM Study)

Inclusion Criteria: * Anaesthetist trained in QLB and ITM techniques available * American Society of Anaesthesiologists PS category client I or II * 18 years of age or older * Ability to read and understand English * Uncomplicated pregnancy at term (\>37 weeks completed gestation) * Booked elective CS Exclusion Criteria: * Contraindications to spinal anaesthesia * History of chronic opioid consumption / chronic pain conditions * Known allergy to study drugs * Weight more than 95kg or body mass index (BMI) more than 35 pre operative * Placenta Previa / accreta * Obstructive Sleep apnoea * Severe asthma unable to tolerate Non steroidal anti inflammatory agents