The defence budget uplift is no longer theoretical. It is flowing into programmes, framework agreements and long term platform commitments.
The UK Government has committed to increasing defence spending towards 2.5 percent of GDP, with further pressure from NATO partners to go beyond that. For advanced manufacturing businesses, that translates into real production demand across land systems, air platforms, naval structures and uncrewed systems.
Composites sit in the middle of much of it.
Lightweight armour panels. Structural UAV components. Radomes. Battery enclosures for hybridised platforms. Blast resistant housings. Interior aerospace structures. The demand signal is clear.
What is less clear is whether UK composite manufacturing capacity is positioned to absorb it.
The order books are moving
Across the UK, primes such as BAE Systems, Leonardo UK and Rolls-Royce are tied into long cycle defence and aerospace programmes with composite content either increasing or being redesigned for cost, weight or durability reasons.
Alongside them, a network of Tier 1 and specialist SMEs are feeding into:
- Next generation armoured vehicle structures
- Rotary and fixed wing aerospace components
- Counter UAS and sensor integrated housings
- Electrified support vehicles and auxiliary systems
Some of this work is new programme activity. Some is life extension, retrofit or localisation work as the UK looks to reduce exposure to overseas supply chains.
From a revenue perspective, many composite manufacturers are reporting stronger forward visibility than they had during the post Covid slowdown. Defence has replaced commercial aerospace as the more stable backbone in several regions.
But stronger order books are only one side of the equation.
The constraint is not demand
In conversations with managing directors and operations leaders across the Midlands, South West and North West clusters, the recurring theme is capacity strain.
Not theoretical future risk. Present strain.
Autoclave availability is tight in certain sub sectors. Cure cycles are booked weeks out. Tooling lead times are stretching. Specialist prepreg supply has improved compared to 2022, but volatility remains.
More importantly, people are the constraint.
Experienced composite laminators with aerospace or defence quality exposure are not readily available. Structural analysts who genuinely understand composite FEA, ply modelling and failure criteria are thin on the ground. Programme managers who can navigate defence compliance, documentation and production ramp up without inflating overhead are being counter offered aggressively.
It is not uncommon to see salary movement of 10 to 20 percent when a candidate moves from commercial aerospace or automotive into defence composite programmes that require security clearance and traceability discipline.
Defence standards change the operational burden
One of the less discussed realities is that defence composite work carries a different compliance and documentation weight compared to many commercial projects.
AS9100 environments are familiar to aerospace manufacturers. Defence programmes add layers around configuration control, material traceability, testing validation and in some cases UK eyes only data restrictions.
That shifts the type of talent required.
A laminator who has worked on motorsport tubs may have outstanding layup skill. That does not automatically translate into a defence production cell where paperwork discipline and process adherence are scrutinised.
Similarly, engineers moving from EV battery structural work into armoured vehicle composite housings often underestimate the verification load. Ballistic testing, environmental conditioning and long term durability modelling create a different development rhythm.
The bottleneck is not just how many people are available. It is how many have done it in the right regulatory environment.
SMEs are carrying a disproportionate load
Much of the UK’s composite capability sits within SMEs. Highly capable, technically strong, often with decades of expertise in niche processes.
They are now being asked to scale output, formalise systems and invest in automation at a pace that does not always align with their historic growth model.
Automation in composite layup is improving. Automated fibre placement and robotic trimming are more visible. Yet capital expenditure decisions are being made in an environment where programme visibility can still shift with political cycles.
For many businesses, the practical decision is whether to invest in plant and people ahead of firm volume commitments, or manage growth cautiously and risk missing framework opportunities.
The workforce cross over is accelerating
An interesting shift over the last 18 months has been the movement of engineers from adjacent sectors into defence composites.
Automotive lightweighting specialists. EV battery enclosure designers. Structural test engineers from motorsport. Advanced manufacturing engineers from high value industrial sectors.
Some transitions work well. The underlying materials science and process knowledge is transferable.
Others expose gaps. Defence customers expect familiarity with qualification routes, documentation standards and longer product life assumptions. The learning curve can slow programmes if not managed carefully.
From where I sit, supporting composite and defence manufacturers across the UK, the conversation has shifted from winning work to delivering it without overstretching operations.
The next 24 to 36 months will not be defined by demand.
They will be defined by capacity, capability and people.
Matthew Taylor – Associate Director
matthew.taylor@jonlee.co.uk
01926 963290
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