Listed buildings are categorised in three grades: Grade I consists of buildings of outstanding architectural or historical interest; Grade II* includes particularly significant buildings of more than local interest; Grade II consists of buildings of special architectural or historical interest. Buildings in England are listed by the Secretary of State for Culture, Media and Sport on recommendations provided by English Heritage, which also determines the grading.
In the UK, historic sites are evaluated and ranked according to their cultural and architectural significance. The process involves recommendations from English Heritage and approval by the Secretary of State for Culture, Media and Sport, which assigns a grade that reflects the site's importance.