There are 421 local planning authorities (LPAs) in the United Kingdom (although in Scotland, where local authorities are unitary in nature, they are known simply as 'planning authorities'). Generally they are the local borough or district council or a unitary authority. Development involving mining, minerals or waste disposal matters is dealt with by county councils in non-metropolitan areas. Within national parks, it is the national park authority that determines planning applications (although in Scotland the situation is sightly different, whereby the Cairngorms National Park Authority only has the power to call-in and determine certain applications which it deems to be of importance to its objectives).