individually; members of the House of Commons possess the right collectively. In each case, personal access may only be used to tender advice on public affairs. Only Privy Counsellors can signify Royal Consent to the examination of a Bill affecting the rights of the Crown. Members of the Privy Council are privileged to be given advance notice of any prime ministerial decision to commit HM Armed Forces in enemy action. Privy Counsellors have the right to sit on the steps of the Sovereign's Throne in the Chamber of the House of Lords during debates, a privilege which was shared with heirs apparent of those hereditary peers who were to become members of the House of Lords before Labour's partial Reform of the Lords in 1999, diocesan bishops of the Church of England yet to be Lords Spiritual, retired bishops who formerly sat in the House of Lords, the Dean of Westminster, Peers of Ireland, the Clerk of the Crown in Chancery, and the Gentleman Usher of the Black Rod. While Privy Counsellors have the right to sit on the steps of the Sovereign's Throne they do so only as observers and are not allowed to participate in any of the workings of the House of Lords. Nowadays this privilege is rarely exercised. A notable recent instance of the exercising of this privilege was used by the Prime Minister, Theresa May, and David Lidington, who watched the opening of the debate of the European Union (Notification of Withdrawal) Bill 2017 in the House of Lords. Privy Counsellors are accorded a formal rank of precedence, if not already having a higher one. At the beginning of each new Parliament, and at the discretion of the Speaker, those members of the House of Commons who are Privy Counsellors usually take the oath of allegiance before all other members except the Speaker and the Father of the House (who is the member of the House who has the longest continuous service). Should a Privy Counsellor rise to speak in the House of Commons at the same time as another Honourable Member, the Speaker usually gives priority to the "Right Honourable" Member. This parliamentary custom, however, was discouraged under New Labour after 1998, despite the government not being supposed to exert influence over the Speaker. Oath and initiation rite The oath of the king's council (later the Privy Council) was first formulated in the early