New Armed Forces complaints rules from 1 April 2026

From 1 April 2026, the Armed Forces Commissioner will handle investigations linked to service complaints. If you serve or have served and think the system got your case wrong-or took too long-these are the rules that explain your rights, what to include, and the timings to watch.

The change is set out in a new Statutory Instrument: the Armed Forces Commissioner (Service Complaints Investigations) Regulations 2026 (SI 2026/24). It was laid before Parliament on 15 January 2026 under the negative procedure, according to the official UK Parliament statutory instruments database. (statutoryinstruments.parliament.uk)

Why the new role? Parliament passed the Armed Forces Commissioner Act 2025, which created the Commissioner and abolished the Service Complaints Ombudsman, folding the Ombudsman’s functions into a single, independent office. The intention is a clearer route for scrutiny and learning when things go wrong. You can read the enabling law on legislation.gov.uk. (legislation.gov.uk)

Before you reach the Commissioner, you still begin with a service complaint through your Service’s central team. The Commissioner is not the first stop for fresh complaints; they examine decisions, process issues and delay around complaints you have already raised. The House of Commons Library guide to the service complaints system explains this first step in plain terms. (commonslibrary.parliament.uk)

You can ask the Commissioner to investigate in four main situations. You may challenge parts of a final decision and explain the redress you think is fair. You may allege maladministration in how your complaint was handled, including undue delay and the injustice it caused. You may also raise undue delay in the handling of a complaint-or, in some cases, a delay affecting a relevant service matter before a complaint is decided. Think of these as: disagreement with an outcome, problems with process, or time dragging on in a way that harms you.

Time limits matter. For investigations into decisions or alleged maladministration, you normally have six weeks from the “relevant date” (for example, the date you were told the appeal outcome) to apply. The law treats a letter or email as received on the second day after it was sent. If you miss the window, the Commissioner can still accept a late application where it would be just and equitable. This timetable mirrors the previous Ombudsman regulations published on legislation.gov.uk. (legislation.gov.uk)

Your application needs to do some specific work. If you disagree with a decision, set out exactly which findings or parts you contest, why you think they are wrong, and what remedy you seek. If you allege maladministration (including delay), explain what went wrong in the handling, the injustice it caused, and the key facts. For delay-only investigations, explain where the clock has run too long and how that has affected you. Attach the decision or appeal determination where relevant, date your application, and if you are out of time, explain why. When you post or email it, that sending date counts as the date you made the application.

After you apply, the Commissioner decides whether to open an investigation and must tell both you and the Defence Council, with reasons. If the Commissioner spots further maladministration while looking at your case, they can choose to investigate that too and must say so in writing. Where an investigation is opened, a copy of your application goes to the Defence Council so the chain of command understands the scope.

You can change your mind. You can withdraw your application in writing at any point before the investigation is complete. The Commissioner will then decide whether to stop or carry on, and will tell you-and the Defence Council-what they have decided and why.

Expect requests for evidence. The Commissioner can require documents or information within a reasonable period and in a particular format. If material is late or not provided, the Commissioner may still complete the investigation and report. If there is a hearing, it will usually be in private; parts may be in public if that is necessary. You may be represented (including by a lawyer) if fairness or someone’s rights require it. Reasonable expenses for giving evidence can be paid, but not legal fees.

You may see a draft report. The Commissioner can share a draft with you and those who may be criticised, consider any comments, and correct slips by certificate. The final report must be sent to the subject of the complaint and anyone criticised in it, alongside the complainant and the Defence Council under the Armed Forces Act 2006. The Commissioner can impose confidentiality duties where disclosure would harm national security or someone’s safety-standards reflected in the previous Ombudsman regulations on legislation.gov.uk. (legislation.gov.uk)

If your case is reconsidered by Defence after a Commissioner decision, you may make a subsequent application about that reconsideration. The same six‑week window applies from the day you are notified of the new decision, with the same “just and equitable” safety‑valve for late applications. That keeps the focus on prompt, fair resolution rather than open‑ended disputes, as set out in the earlier framework the new rules replace. (legislation.gov.uk)

What happens to cases already in motion? When the Commissioner’s office starts work, ongoing Ombudsman matters carry on under the new office so you do not have to start again. Parliament’s business pages show the 2026 package of instruments, including the separate draft measure on family definition and transitional provision, designed to smooth the handover. (lordsbusiness.parliament.uk)

What this means for you right now. If you expect to use the system from April, keep a simple paper and digital file: the decision letters, the date you received each one, any appeal outcome, and the redress you want. When you send anything, save the timestamp or proof of posting. If you are close to a deadline, say so in your covering note. If you withdraw an application, check whether the Commissioner plans to continue without you-sometimes that helps fix a wider process problem that affects others too.

A final practical note. Ministers have told Parliament they expect the Commissioner to be appointed in 2026, with the office operational from April. That aligns with the commencement date for these regulations, and it is worth planning your documents and timelines with that in mind. (parallelparliament.co.uk)