The Crown Estate is a collection of lands and holdings in the United Kingdom belonging to the British monarch as a corporation sole, making it the "Sovereign's public estate", which is neither government property nor part of the monarch's private estate (such as Balmoral Castle and Sandringham House) that belongs directly to him or her independent the monarchical office. As a result of this arrangement, the sovereign is not involved with the management or administration of the estate, exercising only very limited control of its affairs. Instead, the estate's extensive portfolio is overseen by a semi-independent, incorporated public body headed by the Crown Estate Commissioners, who exercise "the powers of ownership" of the estate, although they are not "owners in their own right". The revenues from these hereditary possessions have been placed by the monarch at the disposition of Her Majesty's Government and thus proceed directly to Her Majesty's Treasury for the benefit of the British nation. The Crown Estate is formally accountable to the Parliament of the United Kingdom, where it is legally mandated to make an annual report to the sovereign, a copy of which is forwarded to the House of Commons.