Advance care planning (ACP) is a process of establishing a person’s preferences and wishes, which can then be used to inform future care. These conversations are often held with a healthcare professional and may include a family member. ACP is one method of promoting person-centred care and respecting choice when a person may have lost capacity and be unable to communicate what matters to them.

This article aims to explore the advantages of, and challenges to, the ACP process in the context of end of life care. It examines the practicalities of establishing patients’ preferences and wishes from a clinical perspective. Fictitious case studies based on numerous clinical encounters are used to illustrate the complexities of this process.