‘25. On1 April 2024 , the Applicant submitted her complaint to the Commissioner together with some supporting evidence regarding the Home Office and the Security Service (‘MI5’) [Annex 1]. The complaint concerned data about the Applicant held by the Home Office and MI5. The documents attached to the complaint are not included in Annex 1 due to their volume. 26. On16 April 2024 , the Applicant wrote to the Commissioner to advise that she had raised a complaint with MI5 and asked for a response to the complaint by23 April 2024 27. On23 April 2024 , the Applicant wrote to the Commissioner providing a copy of the complaint response from MI5. 28. The complaint against MI5 was allocated case reference IC-319211-M9C9 and assigned to an ICO case officer. The complaint against the Home Office was separated and allocated case reference number IC-298683-W9Q7. The Commissioner understands this complaint is not subject to this Application. 29. Following further updates from the Applicant, on6 August 2024 , the case officer wrote to the Applicant asking for a copy of the Applicant’s subject access request to MI5 and a copy of their response. On22 August 2024 , the case officer wrote to the Applicant and confirmed that she was satisfied with MI5’s response and that they had complied with their data protection obligations [Annex 2]. 30. Following further correspondence on26 September 2024 , the Applicant wrote was understood to ask the Commissioner for a case review. 31. On21 October 2024 , the reviewing officer issued a reviewed outcome upholding the case officer’s outcome in relation to MI5. [Annex 3]’