National Heritage List for England
The National Heritage List for England (NHLE) is England's official database of protected heritage assets. It includes details of all English listed buildings, scheduled monuments, register of historic parks and gardens, protected shipwrecks, and registered battlefields. It is maintained by Historic England, a government body, and brings together these different designations as a single resource even though they vary in the type of legal protection afforded to each. Although not designated by Historic England, World Heritage Sites also appear on the NHLE; conservation areas do not appear on the NHLE since they are designated by the relevant local planning authority.
The passage of the Ancient Monuments Protection Act 1882 established the first part of what the list is today, it established a list of 50 prehistoric monuments which were protected by the state. Further amendments to this act increased the levels of protection and added more monuments to the list. Beginning in 1948, the Town and Country Planning Acts created the first listed buildings and the process for adding properties to it. As of 2018 [update], more than 600,000 properties are listed individually. Each year additional properties are added to the National Register as part of the different constituent registers that are part of the list.
The list is managed by Historic England (formerly part of English Heritage), and is available as an online database with over 400,000 listed buildings, registered parks, gardens and battlefields, protected shipwrecks and scheduled monuments. A unique NHLE reference number is frequently used to refer to the related database entry; for example, 1285296 refers to Douglas House, a Grade II* listed building in the London Borough of Richmond upon Thames. 
- "The National Heritage List for England has gone live". The Historical Association. 7 April 2011. Archived from the original on 28 September 2011. Retrieved 26 March 2018.
- Historic England. "Douglas House (1285296)". National Heritage List for England. Retrieved 26 February 2017.