The tension-free vaginal tape (TVT) and transobturator tape (TOT) procedures are now the most commonly performed operations for stress urinary incontinence (SUI) in the UK. The majority of reports in the literature relate to the success of TVT in treating SUI. However, there are little data regarding the associated complications. The occurrence of urethral diverticulum following a TVT is rare. The condition frequently presents with non-specific and non-classical symptoms and this leads to incorrect and delayed diagnosis. Reviewing the English literature, we could find three cases of urethral diverticula after a TVT procedure but we could not find any case of urethral diverticulum post TOT insertion. We report a case of a multilocular infected urethral diverticulum 5 years following TOT operation and we describe the management.