Military noise-induced hearing loss (NIHL) claims sit apart from the wider NIHL landscape, both in how liability is established and in how costs are recovered. Claims against the Ministry of Defence involve their own procedural history, including the 2024 Matrix Agreement and the landmark ruling in Abbott and Others v Ministry of Defence [2026] EWHC 941 (KB), both of which have reshaped how these claims are run and, in turn, how costs should be approached. This guide focuses specifically on what makes military NIHL claims costs distinct from general industrial disease costs work.

Why Military Claims Sit Outside Fixed Costs

Since October 2023, the extended Fixed Recoverable Costs regime under CPR Part 45 has covered most Fast Track and Intermediate Track personal injury claims. Military NIHL claims fall entirely outside this regime. The Ministry of Defence’s dual role as both employer and state entity, combined with the scale and complexity of military hearing loss litigation, means these cases are assessed on the standard basis under Parts 44 to 47 of the CPR rather than by reference to a fixed table.

This matters for solicitors bringing these claims, because it changes what needs to be evidenced and justified at every stage, from the initial costs budget through to detailed assessment.

The Matric Agreement and Its Effect on Costs

A significant development for military NIHL litigation was the 2024 Matric Agreement between the Ministry of Defence and claimant solicitors, which resolved a number of generic issues across the wider cohort of claims, including Crown immunity, combat immunity, breach of duty, contributory negligence, apportionment, and limitation, leaving causation and quantum to be determined on an individual basis, subject to an agreed discount.

For costs purposes, this is significant. Claims proceeding under the Matrix framework are no longer litigating liability from scratch; the costs profile of these claims is now concentrated much more heavily on medical evidence, quantification, and individual causation than on the broader liability disputes that shaped earlier military NIHL litigation. Solicitors and costs draftsmen preparing budgets for Matrix-related claims should reflect this shift, focusing cost justification on expert evidence and quantum work rather than generic liability preparation that has, in large part, already been resolved.

Abbot v MoD and What It Means for Expert Evidence Costs

The High Court’s decision in Abbott and Others v Ministry of Defence [2026] EWCH 941 (KB), handed down by Mr Justice Garnham on 24 April 2026, determined a series of generic scientific and legal issues affecting the wider claimant cohort. Most significantly for costs purposes, the court endorsed the revised rM-NIHL methodology over the older Coles, Lutman and Buffin (CLB 2000) guidelines historically used in industrial deafness cases, as the preferred framework for diagnosing and quantifying military hearing loss.

This has a direct bearing on expert evidence costs. Reports prepared using outdated methodology may now be vulnerable to challenge, and solicitors instructing audiological and ENT experts in military claims should ensure reports are prepared with reference to the current rM-NIHL framework to avoid costs disputes over the reliability or currency of the evidence relied upon. We’ve discussed the costs implications of the Abbott MoD ruling, including the extended 31 July 2026 deadline for claims to fall within the Matrix agreement, in more detail in our dedicated case commentary.

Civil Claims, the Armed Forces Compensation Scheme, and Costs Recovery

Veterans and serving personnel affected by hearing damage sustained during military service have more than one potential route to compensation. The Armed Forces Compensation Scheme (AFCS) and the older War Pension Scheme operate separately from civil litigation, and typically allow claims to be submitted within seven years of injury. Crucially, however, neither scheme permits recovery of legal costs – a claimant proceeding solely through AFCS or the War Pension Scheme bears their own costs regardless of outcome.

This is a key point for solicitors advising veterans and medically discharged personnel exposed to excessive noise during their service: identifying, at the earliest possible stage, whether a claim should proceed as a civil action rather than (or alongside) an AFCS or War Pension application is essential, since only the civil route preserves costs recovery. Getting this assessment wrong early on can have lasting consequences for a firm’s costs position throughout the life of the claim.

Limitation and Delayed Diagnosis in Military Claims

Limitation arguments feature heavily in military NIHL litigation. Under the Limitation Act 1980, a claimant generally has three years from their date of knowledge of injury, but many veterans only become aware of hearing damage well after leaving military service. Section 33 of the Act allows the court to extend limitation in appropriate cases, but preparing evidence to support such an application, including tracing historical service records and establishing when knowledge of the injury genuinely arose, adds meaningfully to the time and cost involved in bringing a viable claim.

For costs professionals, properly evidencing this work at the budgeting stage, rather than treating it as incidental preparation, helps protect recovery of the time genuinely spent establishing that a claim is not time-barred.

Budgeting for Military NIHL Claims

Given the exclusion from fixed costs, a comprehensive Precedent H remains essential. Key cost drivers specific to military claims include:

• Expert reports prepared to the current rM-NIHL methodology, alongside any acoustic or engineering evidence on noise exposure during military service
• Retrieval and review of service and medical records, often spanning many years and multiple postings
• Evidence supporting a section 33 limitation extension where diagnosis was delayed
• Consideration of whether the claim sits within or outside the Matrix Agreement framework, and how that affects the scope of remaining liability and quantum work

A realistic budget that reflects these specific features, rather than a generic industrial disease template, gives a much stronger footing for recovery at detailed assessment.

How Greener Costs Can Help

Our team of costs lawyers and costs draftsmen supports solicitors handling claims against the Ministry of Defence, from Precedent H budgeting through to detailed assessment, with particular attention to the evidential and procedural features unique to military hearing loss litigation, including the Matrix Agreement and the current diagnostic methodology endorsed in Abbott v MoD.

Frequently Asked Questions

Do Military NIHL claims fall within fixed recoverable costs? No. Military claims against the Ministry of Defence are excluded from the extended FRC regime and are assessed on the standard basis under CPR Parts 44 to 47.

Can legal costs be recovered through the Armed Forces Compensation Scheme? No. Neither the AFCS nor the War Pension Scheme allows for recovery of legal costs; only a civil claim preserves the ability to recover costs.

What is the Matrix Agreement? An agreement between the Ministry of Defence and claimant solicitors resolving generic issues, including Crown immunity, breach of duty, and limitation, across the wider cohort of military NIHL claims, leaving causation and quantum to be assessed individually.

Why does the diagnostic methodology used matter for costs? Following Abbott v MoD, the court endorsed the rM-NIHL methodology over the older CLB 2000 guidelines. Expert reports prepared using outdated methodology may be vulnerable to challenge, which can affect the recoverability of those costs.

Contact Greener Costs

If your firm is handling a claim against the Ministry of Defence involving military noise-induced hearing loss and needs assistance with budgeting, the Matrix Agreement, or detailed assessment, contact Greener Costs today. Call us on 01204 263047 or email info@greenercosts.co.uk.