Carers of people with High Grade Glioma (HGG) completed a survey assessing their anxiety, depression, and grief in addition to open-ended questions exploring their experiences of support pre- and post-death (N = 25). One-third reported borderline or clinical levels of anxiety, depression, and grief related distress. Given the poor prognosis and rapid deterioration of patients with HGG, the findings highlight the importance of sensitive communication about prognosis early in the disease trajectory, information tailored to disease stage, the initiation of a referral to psychological support services, and timely discussions about the preferred place of care and death.