The Lords Spiritual (Women) Act 2015 is an Act of Parliament of the United Kingdom. It stipulates that whenever a vacancy arises among the Lords Spiritual during the next ten years after the Act comes into force, the position has to be filled by a woman, if there is one who is eligible. In this case, the Act supersedes Section 5 of the Bishoprics Act 1878, which would issue a "writ of summons to that bishop of a see in England who having been longest bishop of a see in England has not previously become entitled to such writ". It does not apply to the five sees of Canterbury, York, London, Durham or Winchester, which are always represented in the House of Lords.