Mersey Docks and Harbour Board v Cameron (1865) 29 JR 483
Affirmed that the Crown should not be held as bound by statutory law unless the law explicitly provides for such limitations
Facts
Historically, municipal docks were immune from the rates typically payable by docks to the Crown as a result of their connection with the State. However, the passing of new legislation served to introduce like rates on all docks. The claimant, Mersey Docks and Harbour Board, attempted to contest this, asserting that this statute violated the royal prerogative’s immunity from such rates.
Issues
Could a municipal dock be subject to rates per statutory law despite that they could be considered an emanation of the royal prerogative, which is generally considered immune to statute.
Decision/Outcome
The House of Lords found against the docks, deeming the rates charged to them legal. Further, the Crown’s prerogative should not be considered limited by any statute unless the Act specifically states such a limitation is being placed, or the objective of the Act clearly indicates that such a limitation may be necessary. Further, the Crown’s immunity extends to persons in consimili casu with persons acting on the royal prerogative so as to discharge duties. However, Mersey Docks and Harbour Board’s submission that they were such persons due to the publicly beneficial nature of their docks was not persuasive in the instant case. The fact that the claimants stood to directly profit from their activities served to negate a claim to rates exemption under the Crown’s prerogative.
Words: 253
Updated 20 March 2026
This case summary remains broadly accurate as a description of the historical decision in Mersey Docks and Harbour Board v Cameron (1865) and the common law principle it affirmed — namely, that the Crown is not bound by statute unless the legislation expressly says so or that intention is necessarily implied. That principle continues to form part of English law, though it has been significantly developed and, in some respects, qualified by subsequent case law and statute. Notably, the presumption that the Crown is not bound by statute has been affirmed in later cases including Province of Bombay v Municipal Corporation of Bombay [1947] AC 58 and R v Secretary of State for Transport, ex parte Factortame, and remains a recognised canon of statutory interpretation. However, readers should be aware that modern courts have increasingly been willing to find that the Crown is bound by implication where the purpose of legislation clearly requires it, and that various statutes now expressly bind the Crown in specific contexts. The article’s description of the in consimili casu doctrine is accurate as a reflection of the decision, though this area of law can be nuanced in its modern application. Overall, the summary is suitable as an introduction to the case and its core principle, but students should supplement it with more recent authorities on Crown immunity from statute when researching current law.
