The diagnosis of chronic kidney disease (CKD) occurs predominantly during advanced disease (stages 4, 5) when there are few opportunities to delay further progression and avoid complications. Patients’ knowledge about their disease can improve self-management leading to better outcomes. However, limited evidence exists regarding patients’ awareness of their CKD diagnosis. Health Survey for England (HSE) is a population-based cross-sectional survey conducted annually to monitor health care of adults and children living in private households in England. We utilised three waves of HSE data (2009, 2010 and 2016 – due to their focus on CKD) to identify patients aged ≥ 16 years with an eGFR between 30 and 59 ml/min/1.73m2 to assess the proportion of patients (95% confidence interval (CI)) aware of their CKD diagnosis (self-reported CKD). Results were tabulated incorporating the HSE survey design using weighting for the blood sample survey component as supplied by NHS Digital as part of the datasets. A total of 32,781 participants were included in the survey, with self-reported CKD prevalence reported for 18,114 and blood / urine samples for 8,970. We identified 555 (6.3%) patients with laboratory evidence indicating stage 3 CKD (including both stages 3a and stage 3b). Among them, 92.7% (90.4-94.4) did not report having CKD (Table 1). Those with a history of cardiovascular disease (CVD) were more likely to report CKD compared to those without CVD (p-value <0.05), but no difference was observed for those with diabetes mellitus (Type 1 or Type 2). No statistically significant differences were observed in self-reported CKD status by age and sex. Utilising population-based survey data in England, a large majority of patients with laboratory evidence of early CKD were unaware of their condition. An opportunity to increase patient awareness clearly exists, and proactive strategies to improve affected patients’ knowledge of their CKD are recommended.