English land law - Wikipedia

HM Land Registry - GOV.UK (www.gov.uk)

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Personal Property: Movable property; belongings exclusive of land and buildings, (Chattels or Personalities) 

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Real Property: fixed property, principally land and buildings. Real property is the land, everything that is permanently attached to the land, and all of the rights of ownership, including the right to possess, sell, lease, and enjoy the land. Real property can be classified according to its general use as residential, commercial, agricultural, industrial, or special purpose

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Adverse possession, sometimes colloquially described as "squatter's rights", is a legal principle under which a person who does not have legal title to a piece of property — usually land (real property) — may acquire legal ownership based on continuous possession or occupation of the property without the permission (licence) of its legal owner. The possession by a person is not adverse if they are in possession as a tenant or licensee of the legal owner.