Abstract Aims According to NBOCA, 20% of cases of CRC’s are emergencies, associated with high rates of post-operative morbidity and death (11.3 % within 90 days, NBOCA annual report 2023). Emergency CRC commonly presents as obstruction and perforation, less commonly with other constitutional symptoms. Aim of study is to assess surgical outcomes in emergency malignant CRC resections. Methods Cohort study carried out from Jan'2008 to Jan'2023. Descriptive demography & post-operative surgical outcomes were analysed in all emergency CRC resections. All elective CRC resections were recruited as controls. Results Em CRC (n = 365) Elective CRC (n = 1349) Mann Whitney U test (p value) Age(yrs) 70.0 70.5 NS Sex(M:F) 193 : 172 764 : 585 NS ASA(median) 3 2 < 0.0001 BMI(kg/m2) 25.7 26.7 < 0.0005 Op time(mins) 134.1 186.1 < 0.0001 LOS(days) 11 7 < 0.0001 Complications (n) Leaks 7 59 NS Ileus 68 207 NS HAP 53 132 NS Anaemia (Tx) 8 47 NS Wound infections 41 115 NS Collections 29 67 NS Sepsis 31 55 NS Mortality (n) 30 day 32 26 NS 60 day 46 38 < 0.01 90 day 54 44 < 0.005 TNM stage (n) 0 10 16 1 20 351 2 107 456 3 158 446 4 45 52 Survival rates 1st year 71.1 92.3 5th year 48.3 77.1 10th year 41.1 68.5 Logrank p < 0.05 15th year 39.5 65.1 Conclusions Emergency CRC patients had a worse pre-operative functional limitation (ASA 3), prolonged hospitalization, greater 90-day mortality rate, thus poorer survival. Despite national bowel cancer screening initiatives, emergency CRC presentations remain a challenge. Our study supports prompt diagnosis and early surgical intervention.