Background Recent studies have demonstrated acute uncomplicated diverticulitis can be managed without antibiotics. We designed and implemented a standardised clinical assessment and management plan (SCAMP) to align with this evidence. The use of SCAMPs guide adjustments to clinical practice in adherence with evolving research and monitors patient outcomes through prospective data collection. Methods We reviewed the management of uncomplicated diverticulitis at Auckland City Hospital (New Zealand) over a 6-month period. Based on this, and recent evidence, a SCAMP was devised comprising a proforma with inclusion/exclusion criteria for non-antibiotics management of uncomplicated descending/sigmoid diverticulitis. Data including; antibiotic use, reasons for clinician deviation, length of stay (LOS), readmission rates, and complications were recorded between August 2023 and January 2024. Comparison to retrospective data was performed using unpaired t-test. Results Total of 53 patients (29 female, 24 male, median age 59) were admitted with diverticulitis over the study period, 39 (74%) with uncomplicated descending/sigmoid diverticulitis. Of these 20 (51%) were managed without antibiotics. There was >90% clinician adherence to the clinical proforma. The mean LOS was 1.0 day (compared with 2.0 days pre-SCAMP; p<0.001). There were no re-admissions or complications at 30 days. Conclusion SCAMP protocols are an emerging quality improvement tool to instigate change in clinical practice. Regular assessment of outcomes and adjustments to protocols allow further improvements. This study describes the initial success instigating evidence-based change in a tertiary centre with significant decrease in LOS without antibiotic use in uncomplicated sigmoid diverticulitis.