Introduction Coronary and cardiac calcifications are common incidental findings on thoracic CT which are frequently not reported. This survey sought the opinions of UK radiologists regarding reporting of incidental calcification. Methods Using an online survey form UK radiologists were invited to answer questions regarding reporting of coronary, aortic valve, mitral and thoracic aorta calcification on routine non-cardiac/vascular thoracic CT. Results 210 radiologists completed the survey including 24 (11%) trainees and 186 (89%) consultants. 30% were not sub-specialists in cardiac, thoracic or vascular imaging. Calcification was not reported by 11% for the coronary arteries, 21% for the aortic valve, 25% for the mitral valve and 38% for the aorta. Age and indication for imaging were the most frequent factors influencing the reporting of calcification. For coronary calcification a per patient visual assessment was the most frequently used (66%), followed by per vessel visual assessment (14%), semi-quantitative scoring (5%) and Agatston scoring (2%). Several comments suggested that guidelines for reporting incidental coronary and cardiac calcification would be useful. Conclusion Reporting of incidental coronary and cardiac calcification varies widely and guidelines are required.