R (Jackson) v Attorney General
R (Jackson) v Attorney General [2005] UKHL 56 is a House of Lords case noted for containing obiter comments by the judiciary acting in their official capacity suggesting that there may be limits to parliamentary sovereignty, the orthodox position being that it is unlimited in the United Kingdom. The case, brought by John Jackson and two other members of the Countryside Alliance, challenged the use of the Parliament Acts 1911 and 1949 to enact the Hunting Act 2004.
Source: Wikipedia — R (Jackson) v Attorney General (CC BY-SA 4.0)