Arlington Capital Buys Eptec Defence in UK Defense Electronics Play

Arlington Capital Partners is acquiring Eptec Defence, a UK-based manufacturer of military electronics and radar systems, in a deal that positions the Washington private equity firm deeper into the transatlantic defense industrial base. Financial terms weren't disclosed, but the transaction comes as NATO allies ramp up procurement spending on electronic warfare and sensor modernization.

Eptec, headquartered in Witney, England, supplies radar assemblies, power systems, and ruggedized electronics to defense primes including BAE Systems, Leonardo, and Raytheon. The company has carved out a niche in small-batch, high-reliability production—exactly the kind of specialized manufacturing that's become a bottleneck as Western militaries race to replace Cold War-era equipment with digital systems.

Arlington, which closed its seventh fund at $2.3 billion in 2024, has been methodically building a portfolio of defense suppliers positioned to benefit from the post-Ukraine military modernization cycle. This is its third aerospace & defense add-on in 18 months, following acquisitions of a U.S. avionics repair shop and a German communications equipment maker.

What makes Eptec attractive isn't scale—it employs roughly 180 people—but technical capability and customer lock-in. Defense electronics isn't a market you walk into. Programs run for decades, qualification cycles are brutal, and once you're designed into a platform, switching suppliers is prohibitively expensive. Eptec's been in the supply chain for over 30 years.

European defense budgets are in the middle of their fastest expansion since the Reagan era. Germany's commitment to hit 2% of GDP on defense translates to roughly €85 billion annually—double what it spent in 2020. Poland's pushing toward 4%. The UK's maintaining flat real-terms growth even as it deals with fiscal constraints elsewhere.

That money's flowing disproportionately into sensors, communications, and electronic warfare—categories where Eptec plays. Legacy radar systems designed in the 1980s are being replaced by active electronically scanned arrays (AESA) that require entirely new power distribution architectures and thermal management solutions. Eptec manufactures both.

The company's customer base spans air, land, and naval platforms. It's produced components for the UK's Type 26 frigate program, upgrades to the Eurofighter Typhoon's radar system, and ground-based air defense installations across Eastern Europe. None of these are huge volume contracts—defense electronics rarely are—but they're sticky, high-margin, and annuity-like once production starts.

According to data from the Stockholm International Peace Research Institute, European military electronics procurement grew 38% between 2021 and 2025. That's faster than overall defense spending growth of 22%, reflecting a shift toward technology-intensive systems. Eptec's revenue has tracked that expansion closely—sources familiar with the company say it's grown at a mid-teens clip annually since 2022.

Arlington's not just buying a standalone business. The firm's been assembling a European defense electronics platform through a series of tuck-in acquisitions, and Eptec looks like the next piece. The strategy: consolidate specialized suppliers that individually lack scale but collectively offer broader capabilities and geographic reach.

Two years ago, Arlington acquired Amphenol Borisch Technologies (ABT), a German manufacturer of military connectors and cable assemblies. Last year it added Avionics Support Group, a U.S.-based provider of radar and communications repair services. Eptec extends that footprint into the UK and adds new product categories—power systems and thermal management—that ABT and ASG don't offer.

The thesis is straightforward: defense primes want fewer, more capable suppliers. A company that can deliver integrated power, thermal, and interconnect solutions is more valuable than three separate vendors each doing one thing. Combine that with the regulatory complexity of selling into defense markets—export controls, security clearances, qualification testing—and there's a real moat around an integrated platform.

Arlington's approach mirrors what other PE firms have done successfully in adjacent sectors. TransDigm built a $70 billion aviation aftermarket empire by rolling up niche parts suppliers and exploiting sole-source positions. Platinum Equity's done something similar in government services. The defense electronics market is fragmented enough—and growing fast enough—that the same playbook might work.

Defense electronics is a fundamentally different business than commercial electronics. You're not selling millions of units. You're selling hundreds or thousands, but each one has to work flawlessly in conditions that would destroy a consumer device: extreme temperatures, vibration, electromagnetic interference, shock.

That engineering complexity translates to pricing power. Gross margins in military electronics typically run 40-55%, compared to 20-30% for comparable commercial work. EBITDA margins for well-run suppliers like Eptec often hit 25-30%. The trade-off is lower revenue scale and longer sales cycles, but once you're designed in, revenue visibility is high and churn is near zero.

Eptec's margins are understood to be at the higher end of that range, driven by its focus on low-volume, high-mix production. It doesn't compete on cost—it competes on technical performance and reliability. That's a sustainable position in a market where failure isn't an option and customers care more about getting the right part than getting the cheapest one.

What the table doesn't show: working capital intensity. Defense contracts often require significant upfront material purchases before payment arrives. Eptec's historical cash conversion has been strong, but scaling the business under PE ownership will require careful working capital management—especially if Arlington pursues additional acquisitions that need integration investment.

Arlington's typical hold period is five to seven years. For a buy-and-build strategy to generate the returns PE investors expect—call it 2.5-3.0x MOIC—you need both organic growth and operational improvements. Eptec brings both levers.

One question hanging over the deal: how will U.S. export controls and CFIUS-style oversight affect Arlington's ability to integrate Eptec with its American portfolio companies? Defense electronics supply chains are increasingly scrutinized for foreign ownership and technology transfer risks.

Arlington, as a U.S.-based fund, likely structured the transaction to maintain operational separation where required. Eptec will almost certainly continue to operate as a standalone UK entity with its own security clearances and export licenses. Technology sharing between Eptec and Arlington's U.S. assets will be governed by International Traffic in Arms Regulations (ITAR) and UK export control law.

This isn't a dealbreaker—it's how cross-border defense M&A works now—but it does limit some synergies. You can't just move engineers between Witney and Arlington's U.S. facilities without clearances and approvals. You can't freely share technical data. That makes integration harder than in a purely commercial business.

The upside: regulatory complexity is a moat. It's harder for new entrants to compete when they'd need to navigate years of certification and clearance processes. Every compliance burden Eptec's already cleared is a competitive advantage.

Still, the regulatory environment's shifting. The UK government has indicated it may tighten foreign ownership rules for defense suppliers, particularly after controversies around Chinese investment in British semiconductor firms. Arlington's U.S. provenance likely insulates it from the worst of that scrutiny—allied nation investors are treated differently than adversarial ones—but it's a variable worth watching.

If Arlington successfully builds a credible pan-Atlantic defense electronics platform, who's the buyer at exit? The obvious candidates are defense primes looking to insource critical components, or larger PE firms hunting for scaled platforms with high recurring revenue.

BAE Systems, Leonardo, Thales, and Lockheed Martin all periodically acquire suppliers to secure supply chains and capture margin that would otherwise go to subcontractors. A $500 million-$1 billion platform combining Eptec, ABT, ASG, and future add-ons would be large enough to interest strategic buyers but small enough not to trigger antitrust concerns.

Eptec's acquisition happens against the backdrop of the strongest defense electronics market in a generation. But not all of that demand is sustainable, and not all defense budgets are created equal.

European NATO members committed to spending 2% of GDP on defense. Most are hitting that target now. But GDP growth has slowed, and fiscal pressures are mounting—particularly in Germany and France. There's a real risk that defense budgets flatten or decline in the early 2030s once the immediate threat perception from the Ukraine conflict fades.

The UK presents a different risk. Its defense budget is under constant pressure from competing priorities: healthcare, social services, debt servicing. The 2025 Integrated Review maintained defense spending in real terms, but future governments may not. Eptec's revenue is heavily weighted toward UK programs, which makes it vulnerable to domestic budget cuts.

That's where Arlington's buy-and-build strategy becomes critical. By diversifying across geographies—UK via Eptec, Germany via ABT, U.S. via ASG—the platform spreads risk across different budget cycles and threat perceptions. It's harder for a single government's fiscal choices to tank the entire business.

Arlington's not the only PE firm circling defense electronics. Veritas Capital, AE Industrial Partners, and Platinum Equity have all been active in the sector. The competition for quality assets has pushed valuations higher—mid-market defense suppliers that traded at 8-10x EBITDA five years ago now go for 12-15x or more.

Eptec's valuation wasn't disclosed, but comparable transactions suggest Arlington likely paid in the 12-14x range. That's not cheap, but it's justifiable if the business is genuinely positioned for double-digit organic growth and can be integrated into a larger platform that commands a premium exit multiple.

The deal's expected to close in Q2 2026, subject to regulatory approvals from UK and U.S. authorities. Assuming it clears—and there's little reason to think it won't—the real test begins: Can Arlington integrate Eptec, ABT, and ASG into a coherent platform without disrupting the customer relationships that make each business valuable?

Defense customers are conservative. They don't like change. If integration creates operational hiccups—delivery delays, quality issues, communication breakdowns—customers will remember. The risk isn't losing contracts immediately; it's not winning the next ones.

Beyond integration mechanics, there's a strategic question: Does Arlington keep adding tuck-ins, or does it focus on scaling what it's already bought? The former maximizes revenue growth and exit multiple. The latter reduces execution risk and allows margin expansion through operational improvements.

Most successful buy-and-build platforms do both—a few years of aggressive M&A followed by a consolidation phase. If Arlington follows that script, expect one or two more acquisitions in 2026-2027, then a shift toward integration and organic growth in 2028-2029 ahead of an exit in 2030-2031.

Arlington's acquisition of Eptec is a data point in a broader trend: private equity's growing role in the defense industrial base. That has implications for military readiness, supply chain resilience, and industrial policy.

Defense departments historically preferred suppliers with long institutional histories and patient capital structures. PE ownership introduces shorter time horizons and higher leverage. That's not inherently bad—PE firms often bring operational discipline and growth capital that family-owned businesses lack—but it changes incentives.

A PE-owned supplier optimizing for a five-year exit might underinvest in R&D or capacity expansion if the payback period exceeds the hold period. It might prioritize margin improvement over customer service. These are edge cases, not certainties, but defense ministries are paying attention.

The counterargument: PE-backed consolidation might be exactly what the defense industrial base needs. Fragmented suppliers lack scale to invest in automation, workforce development, or next-generation manufacturing. Platforms like what Arlington's building can afford those investments in ways individual small businesses can't.

Which version of the story plays out will depend on how Arlington manages the business. If Eptec's delivery times improve, quality stays high, and the company wins new programs, PE ownership will look like a success. If the opposite happens, expect regulatory scrutiny of future defense electronics M&A to increase.

Press releases are optimized for signaling stability and continuity. What they don't say is often more interesting than what they do.

Eptec's previous ownership structure wasn't disclosed. If it was founder-owned or held by a smaller PE firm, this transaction likely represents a liquidity event for owners who've ridden the post-2022 defense spending wave and want to derisk. If it was part of a larger conglomerate, the sale might signal that parent company's strategic retreat from defense.

Employee retention is another unspoken variable. Defense electronics relies on deep technical expertise—knowledge of specific radar architectures, qualification test procedures, customer engineering preferences. That expertise often walks out the door if ownership transitions go badly. Arlington's almost certainly offered retention packages to key engineers and program managers, but whether those packages are sufficient won't be clear for 12-18 months.

And then there's the question of earnouts or seller financing. Many mid-market defense transactions include earnout provisions tied to revenue or EBITDA targets. If Eptec has one, it could influence how aggressively the company pursues growth in the near term—pushing management to prioritize hitting milestones over long-term investments.