R v Chaytor [2010] UKSC 52
Facts
Three former MPs faced criminal proceedings for false accounting in connection with parliamentary expense claims. Before the allegations could be tried, they argued that the courts lacked jurisdiction because the claims fell within parliamentary privilege. They relied both on Article 9 of the Bill of Rights and on Parliament's exclusive control of its internal affairs. The issue reached the Supreme Court as a question about the permissible scope of prosecution. It required the Court to distinguish the administrative handling of expenses from activities central to parliamentary debate and legislation.
Legal Issue
Whether alleged false accounting in MPs’ parliamentary expense claims was protected by Article 9 or exclusive cognisance, preventing prosecution in the ordinary criminal courts.
Held
The Supreme Court rejected the privilege arguments and held that the prosecutions could proceed. Expenses claims were not sufficiently connected with Parliament's core business to constitute protected proceedings under Article 9. Their scrutiny would not inhibit freedom of speech or debate. The broader principle of exclusive cognisance also did not bar these proceedings: privilege serves Parliament's constitutional functions rather than supplying individual MPs with a general exemption from criminal law. The courts had to determine the legal boundary, with appropriate respect for Parliament's own views. The decision resolved jurisdiction and privilege, not the factual question whether each defendant had committed the offences alleged.
⭐ Legal Principle
Parliamentary expense claims are not protected proceedings merely because an MP makes them. Parliamentary privilege protects the institution’s essential functions; it did not prevent ordinary criminal prosecution for the alleged false accounting in Chaytor.
Significance
Chaytor marks the boundary between protecting Parliament's institutional work and giving MPs personal immunity from ordinary criminal law. Expense claims were administrative activities rather than protected debate or proceedings. The case complements Prebble and the Bill of Rights protection of speech: a court must identify the activity actually being questioned. It does not remove privilege whenever criminal wrongdoing is alleged. Nor did the jurisdiction appeal determine whether the defendants were guilty; it decided that their prosecutions could proceed in the ordinary courts.
Common exam questions about this case
Why were the MPs’ expenses claims outside parliamentary privilege?
Submitting and processing claims did not form part of Parliament’s core legislative and deliberative work. Examining their alleged falsity would not inhibit speech or debate in Parliament. The Supreme Court therefore rejected the attempt to characterise these administrative claims as proceedings protected by Article 9 of the Bill of Rights.
Who determines the legal limits of parliamentary privilege?
The courts determine the scope of privilege while paying careful regard to Parliament’s own understanding and the constitutional importance of its functions. That does not give courts licence to question protected debate. In Chaytor the necessary distinction was between Parliament’s protected business and ordinary administrative expense claims.
Does the case mean privilege disappears whenever a crime is alleged?
No. The nature of the activity remains decisive. A criminal allegation cannot by itself convert protected parliamentary proceedings into material open to judicial questioning. Chaytor concerned expense claims outside that protection. Its conclusion should not be broadened into a rule that parliamentary speech is unprotected in criminal litigation.