The Crown Proceedings Act 1947 (c. 44) is an Act of the Parliament of the United Kingdom that allowed, for the first time, civil actions against the Crown to be brought in the same way as against any other party. The Act also reasserted the common law doctrine of Crown privilege but by making it, for the first time, justiciable paved the way for the development of the modern law of public interest immunity. The Act received royal assent on 31 July 1947 and came into force on 1 January 1948.