UK Armed Forces complaints rules start 1 April 2026

If you’re serving, have recently left service, or are supporting someone who has, a clearer route for tackling problems begins on 1 April 2026. A new Armed Forces Commissioner will take over investigations from the Service Complaints Ombudsman, with the process and timelines set in the Armed Forces Commissioner (Service Complaints Investigations) Regulations 2026 published on legislation.gov.uk. We’ll walk you through what you can ask for, what to include, and when to act.

Who can use this route? Anyone subject to service law, or who has ceased to be subject to service law, who believes they’ve been wronged in a matter relating to their service. You can ask the Commissioner to look at four things: a decision on your service complaint you disagree with; possible maladministration in the way your complaint was handled; undue delay in handling your complaint; or undue delay connected to a relevant service matter you raised. In plain English, maladministration covers things like errors, unfair process, or avoidable delay.

When you ask the Commissioner to review a decision you disagree with, be specific. Set out which parts of the decision you think are wrong, explain why, and say what redress you think would be fair. Redress might mean a different decision, an apology, or a practical remedy the Defence Council can deliver. Being clear about the outcome you seek helps the Commissioner and the Defence Council understand what would put things right.

If you’re alleging maladministration or delay, describe exactly what happened and when. Explain the injustice you suffered or may suffer as a result, such as stress, reputational harm, financial loss, or missed career opportunities. Then link your explanation to the facts: dates of emails or letters, meeting notes, and who told you what. What this means for you: the stronger your timeline, the easier it is for the Commissioner to test what went wrong.

Attach the paperwork that shows where you are in the system. That will usually be the written decision on your service complaint, the appeal outcome if there was one, or any reconsideration decision after a previous review. Date your application and, if it’s late, briefly set out your reasons. Your application is treated as made on the day you post or email it to the Commissioner, so keep proof of sending. Notifications sent to you are treated as received on the second day after they were posted or emailed, so build that into your own timeline.

There are firm time limits. For reviews of a decision or of maladministration, you normally have six weeks. The clock starts on the day you’re treated as receiving the relevant notice. If you appealed and got an appeal outcome, time runs from that appeal notification. If your appeal couldn’t proceed because it wasn’t on a valid ground and you didn’t ask the Commissioner to review that refusal, time runs from the Defence Council’s notice of that refusal. If you did ask for a review and the refusal was upheld, time runs from the Commissioner’s notice. If you had no grounds to appeal, time runs from the original decision letter. The Commissioner can still accept a late application where it’s just and equitable to do so, but you shouldn’t rely on that discretion.

After you apply, the Commissioner decides whether to start an investigation and will write to you and the Defence Council with reasons. If they start an investigation even though you applied late, they will explain why they consider it fair to accept it out of time. They’ll also send a copy of your application to the Defence Council so the department responsible can respond. If, while investigating, the Commissioner spots further maladministration, they can decide to examine that too and must explain the reasons to you and the Defence Council.

You can change your mind. You may withdraw your application any time before the investigation is completed by writing to the Commissioner. They will then send a copy of your withdrawal to the Defence Council and decide whether to begin, continue, or stop the investigation in light of your notice. They will tell you and the Defence Council what they’ve decided and why. What this means: you remain in control of whether you want the investigation to proceed, but the Commissioner may still continue if fairness requires it.

The Commissioner can require documents or information and can set deadlines and formats for what they ask you or the department to provide. If materials aren’t provided, the investigation can still be completed. People who might be criticised or are subjects of the complaint will be given a chance to comment. Hearings, if held, are normally in private; parts can be public where necessary, with sensible limits on attendance or reporting. Representation, including by a lawyer, may be allowed where fairness or someone’s rights are at stake. Witnesses can have travel or time-loss expenses covered, but not legal fees.

Before finalising findings, the Commissioner may share a draft report with you, the Defence Council, anyone alleged to be responsible for maladministration, the subject of the complaint, and anyone likely to face criticism, inviting comments. The final report can summarise those comments and respond to them. Clerical slips can be corrected by certificate, and copies of the report go to the complainant, the Defence Council, the subject of the complaint, and anyone criticised. Confidentiality duties can be imposed where appropriate, including where disclosure would harm national security or risk someone’s safety.

If your complaint is reconsidered because of a Commissioner’s decision and you receive a fresh decision afterwards, you can apply again to the Commissioner about that reconsideration. The same six‑week limit and the same “second day after sending” rule for when you’re treated as receiving a notice apply. Late applications can still be taken where the Commissioner decides it’s just and equitable. This creates a clear feedback loop: decision, reconsideration if ordered, then a further right to ask the Commissioner to look again at how that reconsideration was handled.

There’s a smooth handover from the Ombudsman to the new Commissioner. Anything the Ombudsman had done or started before 1 April 2026 is treated as done by, or can be continued by, the Commissioner. Rights, duties and confidentiality obligations carry over. The 2015 Ombudsman investigation regulations are revoked and re‑enacted for the Commissioner, with updates and savings so live cases aren’t disrupted. In short, if you’re mid‑process when the new rules start, you won’t have to start again.

Practical tip for learners and families: treat this like a coursework deadline. Build a simple timeline, note every date you receive a letter or email, save copies, and state clearly what you want to happen next. If you need to send something late, say why. The Ministry of Defence’s explanatory note to the Regulations, published on legislation.gov.uk, confirms the aim is continuity with clearer powers and timings, so the more precise you are, the easier it is for the Commissioner to help. What this means for you: a fairer, more teachable process you can follow without legal jargon.