New Armed Forces Commissioner rules from 1 April 2026

From 1 April 2026, investigations that used to sit with the Service Complaints Ombudsman move to the new Armed Forces Commissioner. If you’re serving, have recently left, or you support service families and cadets in the classroom, this guide explains how the process works, the key deadlines, and what has changed.

Why the change? Parliament created the Armed Forces Commissioner in 2025 and abolished the Ombudsman, transferring the service‑complaints work across. The Act also gives the Commissioner wider duties around welfare and reporting to Parliament, designed to strengthen independent oversight of service life. Source: legislation.gov.uk (Armed Forces Commissioner Act 2025). (legislation.gov.uk)

There are now two clear routes you’ll hear about. The service complaints route is for when you think you were wronged in relation to your service; you can use it while serving or after you’ve left. Alongside that, the Commissioner can also investigate general welfare issues that materially affect people in uniform and, importantly, can consider requests from relevant family members. Source: Armed Forces Act 2006; Armed Forces Commissioner Act 2025 explanatory notes. (legislation.gov.uk)

First, the service complaints investigation route. Under section 340H of the Armed Forces Act 2006, the Commissioner can look at four things: whether a finally determined complaint was correctly decided; alleged maladministration in how a complaint was handled; undue delay in a complaint being handled; and undue delay in dealing with a related service matter. This sits on top of the Defence Council’s own decision‑making and appeals process. Source: legislation.gov.uk. (legislation.gov.uk)

When you apply for an investigation, you must write to the Commissioner and say what kind you want them to carry out. If you are challenging a final decision, set out the parts you disagree with, why, and what redress you think would be fair. If you allege maladministration or delay, spell out what went wrong, how it harmed you, and the facts you rely on. Attach the relevant decision letters if you’re challenging a decision. Applications can be sent by post or electronically. These points mirror the previous 2015 Ombudsman rules now being re‑enacted for the Commissioner. Source: legislation.gov.uk. (legislation.gov.uk)

Deadlines matter. For challenges to decisions or alleged maladministration, you normally have six weeks from the relevant notification date. Where an appeal couldn’t proceed because it wasn’t on a valid ground, the clock starts from the day you were told that was the case; otherwise it runs from the appeal outcome or the original decision if there were no grounds to appeal. For timing, “received” is treated as the second day after a letter or email was sent. These timings reflect the long‑standing 2015 rules now carried across. Source: legislation.gov.uk. (legislation.gov.uk)

What this means in practice: if an appeal outcome email was sent on Monday, it is treated as received on Wednesday; your six‑week application window runs from that Wednesday. If life gets in the way, the Commissioner can still accept a late application where they judge it “just and equitable” to do so, but you should explain why you’re late and include dates. Source: 2015 Ombudsman Regulations. (legislation.gov.uk)

Once your application lands, the Commissioner decides whether to open an investigation and must give reasons either way. If they do open one, a copy of your application goes to the Defence Council. If, during the case, the Commissioner spots other maladministration linked to your complaint, they can expand the investigation and will explain why. Source: legislation.gov.uk. (legislation.gov.uk)

You can withdraw your application at any point before the investigation finishes. If you do, the Commissioner will tell the Defence Council and then decide whether to stop, continue, or begin the investigation despite your withdrawal, giving reasons to both sides. Source: legislation.gov.uk. (legislation.gov.uk)

To get to the facts, the Commissioner can require documents or information, set deadlines and formats, and-if material isn’t provided-complete the investigation anyway and report on the evidence available. These powers sit alongside the Act’s ability to summon evidence in a way comparable to court processes. Source: Armed Forces Act 2006; 2015 Regulations. (legislation.gov.uk)

If the Commissioner holds an oral hearing, it will usually be in private, though part or all can be in public if needed. The Commissioner can allow legal or other representation where fairness or someone’s rights require it, and they may pay reasonable expenses or allowances for time lost by people who give evidence. Source: legislation.gov.uk. (legislation.gov.uk)

Before finalising, the Commissioner may share a draft report with the complainant, the Defence Council and anyone likely to be criticised, and address any comments in the final report. The final report goes to the complainant and Defence Council under the Act, and also to the subject of the complaint and anyone criticised by name. The Commissioner can correct slips, and may require confidentiality where disclosure risks national security or someone’s safety. Sources: Armed Forces Act 2006; 2015 Regulations. (legislation.gov.uk)

If your case is reconsidered by Defence after a Commissioner’s report, you can apply again to the Commissioner about that reconsideration decision. The same six‑week limit applies from the day you are notified of the reconsideration outcome, with a safety‑valve for late applications where it is just and equitable. Source: legislation.gov.uk. (legislation.gov.uk)

What happens to ongoing Ombudsman cases? The new Regulations carry everything over so no one has to start again. Acts already taken by or against the Ombudsman are treated as taken by or against the Commissioner; existing rights, liabilities and confidentiality duties continue; and any time limits already running keep running under the new rules. The older 2015 transitional regulations are updated so references point to the Commissioner. Source: legislation.gov.uk. (legislation.gov.uk)

Beyond individual complaints, remember the Commissioner’s new “general service welfare” role. They can look at wider welfare problems, consider requests from family members, and visit UK Defence premises-sometimes unannounced-to see what is happening and gather information. This is separate from a service complaint and can’t be used to re‑run a specific case. Source: Armed Forces Commissioner Act 2025 explanatory notes. (legislation.gov.uk)

If you’re a student or educator helping someone prepare, build a simple pack: the decision letter and any appeal outcome, a timeline of key dates, and a clear note of what redress would fix things. Check the six‑week clock, and, if it has already run out, write a short explanation on why late acceptance would be fair. This makes the Commissioner’s triage faster and more focused.

For service families and young readers, here’s the plain‑English takeaway. The Commissioner is now the independent point of contact for investigations into service complaints, with clearer timeframes and stronger tools to gather evidence. Families can also ask the Commissioner to look at wider welfare problems that affect life in uniform, helping Parliament see where change is needed. Source: legislation.gov.uk. (legislation.gov.uk)