Background: There has been widespread evidence emerging regarding disparities between COVID-19 outcomes in patients of varying ethnicities and background. It is, however, unclear how various patient characteristics affect COVID-19 severity and risk of death in a cancer population. Methods: Our Cancer Centre was at the epicentre of the COVID-19 outbreak in the UK. A total of 156 cancer patients had a confirmed COVID-19 diagnosis between the 29th of February through the 12th of May 2020. Logistic/Cox proportional hazards models were used to identify which demographic and/or clinical characteristics were associated with COVID-19 severity/death. The regression models were defined through a directed acyclic graph (DAG) to decide upon the minimal adjustments required for each statistical model. Results: Of the 156 COVID-19 positive cancer patients, the most frequently reported tumour types were urological/gynaecological (29%), followed by haematological (18%) and breast (15%). 128 (82%) presented with mild/moderate COVID-19 and 28 (18%) with severe disease. Initial diagnosis of cancer >24m before COVID-19 (OR:1.74 (95%CI: 0.71-4.26)), presenting with fever (6.21 (1.76-21.99)), dyspnoea (2.60 (1.00-6.76)), gastro-intestinal symptoms (7.38 (2.71-20.16)), or higher levels of CRP (9.43 (0.73-121.12)) were linked with greater COVID-19 severity. During median follow-up of 37 days, 34 patients had died of COVID-19 (22%). Asian ethnicity (3.73 (1.28-10.91), palliative treatment (5.74 (1.15-28.79), initial diagnosis of cancer >24m before (2.14 (1.04-4.44), dyspnoea (4.94 (1.99-12.25), and increased CRP levels (10.35 (1.05-52.21)) were positively associated with COVID-19 death. Socioeconomic status (SES) was not found to be associated with either COVID-19 severity or risk of death. We will present updated data with more mature follow-up. Conclusions: In cancer patients, Asian ethnicity was found to be positively associated with COVID-19 death compared to Caucasian patients. However, SES was not associated with COVID-19 severity or risk of death thereby implying this was not due to poor access to healthcare. Future studies hence need to identify the underlying biological and/or societal reasons explaining these ethnic disparities in COVID-19 outcomes for cancer patients.