English Heritage

The following Wikipedia text refers to English Heritage in its pre-April 2015 form:

English Heritage (officially the Historic Buildings and Monuments Commission for England) is an executive non-departmental public body of the British Government sponsored by the Department for Culture, Media and Sport (DCMS). By advising on the care of the historic environment in England, English Heritage complements the work of Natural England which aims to protect the natural environment. It has a broad remit of managing the historic environment of England and advises the relevant Secretary of State on policy and in individual cases such as registering listed buildings and scheduled ancient monuments.

The current details are:

English Heritage (officially the English Heritage Trust) is a registered charity that looks after the National Heritage Collection.[2] This comprises over 400 of England's historic buildings, monuments and sites spanning more than 5,000 years of history. Within its portfolio are Stonehenge, Dover Castle, Tintagel Castle and the best preserved parts of Hadrian's Wall. English Heritage also manages the London Blue Plaques scheme, which links influential historical figures to particular buildings.

The website is.

More information on the Wikipedia page.