Abstract Background Delirium is a common medical emergency which is well-known to be associated with adverse outcomes but often remains under-recognised in the acute care setting. In recent years, efforts have been made by our gerontology department to increase awareness of the importance of recognising delirium as a medical condition. Initiatives carried out included the roll-out of education sessions at ward level, medical and nursing grand rounds. Utilising HIPE (Hospital Inpatient Enquiry) data, we assessed whether such interventions have translated into increased recognition of delirium in hospital inpatients. Methods We collated data from the HIPE department in our hospital. HIPE assessed all hospital inpatient medical charts for patients that were discharged each year to assess whether delirium was recorded as a diagnosis in such patients. The data for each discharge year spanning from 2018 to 2022 inclusively was compared. We assessed the number of patients discharged during those years that had a diagnosis of delirium recorded in their chart. Additionally, in conjunction with the frailty team, we reviewed all formal interventions made in our hospital since 2018 to promote awareness around delirium. Results A year-on-year increase in the number of cases of chart-recorded delirium among hospital inpatients between 2018 and 2022 was observed. In 2018, there were 308 diagnoses of delirium made in patients being discharged from hospital that year. This was followed by 342 in 2019, 424 in 2020, 501 in 2021 and 609 in 2022. There were nine different initiatives identified to have been carried out by the gerontology team to increase education around delirium. Conclusion Interventions made have shown to increase the recognition and diagnoses of delirium. With diagnoses increasing by nearly 98% over a five-year period, this shows that interventions to improve awareness of delirium can have significant impact. Recognising delirium is the first step to improving outcomes for patients.