The Cabinet Office (CO) has published two letters between itself and the Home Office regarding the future implementation of the Safety of Rwanda (Asylum and Immigration) Bill, if it gains Royal Assent. The first letter is from the Director General, Propriety and Constitution Group in the Cabinet Office, Darren Tierney, to the Permanent Secretary at the Home Office, Sir Matthew Rycroft KCMG CBE. In this letter, Tierney provides draft guidance to the Civil Service highlighting that the decision to comply with a Rule 39 indication is one for Ministers to take, and that civil servants, operating under the Civil Service Code, are required to implement any such decision made by Ministers. Tierney has said that final guidance will be provided when the Bill becomes law. The second letter is from Rycroft to Cabinet Secretary and Head of the Civil Service, Simon Case CVO. In this letter, Rycroft has said that guidance will be issued to those involved in removals to Rwanda and revised guidance given to caseworkers. Rycroft has said that the amendment will require caseworkers to immediately refer a case, where a Rule 39 measure is indicated, to Ministers to decide on how to proceed. As with the first letter, Rycroft has said that the guidance may change as the Bill goes through Parliament.