The Pudendal nerve is a mixed nerve (sensory and motor) derived from the somatic component of sacral nerve roots S2-S4. It is located behind the sacrospinous ligament. It supplies anal and urethral sphincters, the pelvic floor muscles, anal and perineal skin. PNB is a routine procedure used during instrumental deliveries in obstetrics and as a low-risk, low-cost anaesthetic technique effectively reducing perineal and vaginal discomfort during repair of obstetric lacerations. PNB is also increasingly being utilised as a preventive analgesia with positive results on pain relief, reduced analgesics, improved spontaneous micturition, less pain on defecation and shorter hospital stay and pain on following haemorrhoidectomy. Improving post- operative pain relief and enhancing patient recovery is of fundamental importance to both the individual and the National Health Service (NHS). This study is a preliminary step in the assessment of a preventive analgesia on women's post- op experience following routine posterior vaginal wall surgery.