c. 26) is an Act of the Parliament of the United Kingdom that confirms the power of every adult to dispose of their real and personal property, whether they are the outright owner or a beneficiary under a trust, by will on their death (s.3).

The 4th report of the Commissioners for Inquiring into the Law of Real Property recommended a simplified and unified scheme.

As the Commissioners observed "Any scrap of paper, or memorandum in ink or in pencil, mentioning an intended disposition of his property, is admitted as a will and will be valid, although written by another person, and not read over to the testator, or even seen by him, if proved to be made in his lifetime according to his instructions."

A bill was introduced by the Attorney General Sir John Campbell, one of the Commissioners, in 1834 though it was much delayed for want of parliamentary time.

[6][7] A minor, as of 2008 a person under the age of 18, cannot make a valid will (s.7), unless they are a member of the armed forces on active service or a mariner at sea (s.11).

[9] A will or codicil cannot be revoked by any presumption of the intention of the testator or on the grounds of any alteration in his circumstances (s.19).

However, all save sections 1 and 11 were repealed and re-enacted, with amendments, in Northern Ireland in 1995[10] following the recommendations of the Land Law Working Group.

The Act did not extend to estates pur autre vie and various manorial rights were preserved over the land devised.

These provisions became irrelevant following the demise of the manorial system with the Law of Property Act 1925.

Section 8 maintained the earlier incapacity of a feme covert to make a will.