Walking is one of the most popular outdoor recreational activities in the United Kingdom, and within England and Wales there is a comprehensive network of rights of way that permits access to the countryside. Furthermore, access to much uncultivated and unenclosed land has opened up since the enactment of the Countryside and Rights of Way Act 2000. In Scotland the ancient tradition of universal access to land was formally codified under the Land Reform (Scotland) Act 2003. In Northern Ireland however, there are few rights of way, or other access to land.