R (Purdy) v Director of Public Prosecutions [2009] UKHL 45
Facts
Debbie Purdy wished to understand the legal consequences if her husband helped her travel abroad for an assisted death. She was concerned that he might face prosecution for assisting suicide. The relevant statutory offence required the Director of Public Prosecutions' consent before proceedings could be brought, but the available general prosecution guidance did not explain sufficiently how discretion would be exercised in this situation. Purdy sought a clearer statement of the relevant factors. Her claim concerned her own wish for clarity and autonomy, not a demand by her husband that she end her life.
Legal Issue
Did Article 8 require clearer guidance about the exercise of prosecutorial discretion in assisted-suicide cases, so that a person in Purdy's position could foresee the legal consequences of seeking assistance?
Held
The House of Lords allowed Purdy's appeal. Her situation engaged Article 8, and the interference with her private life had to satisfy the Convention requirement of legality, including adequate accessibility and foreseeability. The existing general guidance did not give sufficient clarity about how the Director would exercise discretion in this category of case. The Director was therefore required to publish an offence-specific policy explaining the relevant factors. The decision neither legalised assisted suicide nor guaranteed that Purdy's husband would not be prosecuted. It addressed the clarity of the policy governing a statutory discretion, while leaving the underlying offence and individual prosecutorial decisions distinct.
⭐ Legal Principle
Where prosecutorial discretion affects the exercise of Article 8 rights, the applicable legal framework must provide sufficient accessibility and foreseeability. In Purdy's circumstances, that required a specific prosecution policy rather than reliance on general guidance that left the relevant factors unclear.
Significance
The case demonstrates that the Convention requirement of legality concerns the quality and foreseeability of a legal framework, not merely the existence of a statutory power. It also separates a right to sufficiently clear guidance from a right to a particular prosecution outcome. Students should explain the 2009 holding precisely and check subsequent legislation and policy before answering a contemporary assisted-dying question. The judgment itself does not supply a general permission or an advance immunity from criminal liability.
Common exam questions about this case
Did Purdy establish a right to assisted suicide?
No. The House of Lords required clearer guidance about prosecutorial discretion under the legal framework then in force. It did not remove the offence or promise that assistance would go unprosecuted. The Article 8 analysis concerned foreseeability and clarity, not a general judicial authorisation of assisted suicide.
Why was a general prosecution code insufficient?
It did not explain sufficiently how the relevant discretion would be exercised in the particular category of assisted-suicide cases affecting Purdy. The judgment required guidance that made the relevant factors more accessible and foreseeable. A statutory discretion may therefore need more than broadly expressed general policy to satisfy Convention legality.
What should a current-law problem answer check separately?
It should distinguish Purdy's 2009 ruling from the legislation and prosecution policy applicable at the date of the hypothetical facts. The case establishes the requirement for adequate clarity; it does not freeze later law or predetermine an individual prosecution. Any current statutory developments need their own analysis.