Private capital is moving deeper into the supply chain

Some of the most strategically important businesses within UK aerospace and defence are companies that rarely attract headlines.

They are specialist precision engineering and advanced manufacturing businesses operating across the aerospace and defence supply chain. Often founder-led or privately owned, they have spent decades developing technical expertise, accreditations and trusted relationships with a relatively small number of customers.

Increasingly, they are also attracting the attention of private equity.

The rationale is understandable. Precision engineering remains highly fragmented, while demand from aerospace and defence continues to grow. Around £900m of UK precision engineering transactions were recorded in 2025, with private equity involved in approximately 60% of those deals.

Within defence specifically, investors are moving further down the supply chain in search of specialist capability, constrained capacity and exposure to long-term programmes. Supply-chain manufacturing, including components, machining and aerostructures, is estimated to represent 40 to 55% of UK defence and aerospace deal activity.

But buying the capability is only the beginning.

The more interesting question is what happens next.

How private equity turns engineering businesses into growth businesses

Many of the businesses attracting investment have been extremely successful at doing what they have always done well.

They know their customers, understand their programmes and deliver technically complex products to exacting standards.

But, by their nature, many are also relatively conservative businesses.

Growth has often been organic and relationship-led. New business comes through reputation, referrals and existing customers. Commercial teams can be relatively small and, in some cases, the founder or Managing Director remains one of the organisation’s most important customer relationships.

While this model may be precisely what has made the business successful, it can also mean a company operates largely within its existing line of sight.

For an investor with a three-to-five-year value creation plan, that creates both a challenge and an opportunity.

Why commercial leadership matters after private equity investment

Leadership discussions following private equity investment often focus on the CEO and CFO.

In the aerospace and defence supply chain, however, one of the most important early appointments can sit on the commercial side of the organisation.

Increasingly, we see the importance of a strong Chief Commercial Officer, Chief Revenue Officer or senior Business Development and Sales leader who can look beyond the company’s established customer base and ask a different set of questions.

Their role is to identify adjacent opportunities, broaden customer relationships, expand into new markets and engage customers in the procurement cycle.

This is not simply about “selling more”.

It requires somebody who understands how business is genuinely won in aerospace and defence: long programme cycles, complex stakeholder environments, technical credibility, security considerations and relationships built over years rather than quarters.

The strongest commercial leaders combine that sector knowledge with the appetite to challenge the boundaries within which a traditional engineering business has historically operated.

How aerospace and defence suppliers become strategic partners

For many specialist manufacturers, the greatest opportunity may not be to become a bigger supplier. It may be to become a more strategic partner to their customers.

The distinction matters. Strategic partners help customers solve future challenges rather than simply responding to requirements.

This may involve earlier programme engagement, investment ahead of demand, addressing capacity constraints or combining capabilities through acquisition to offer a broader solution.

The direction of travel is visible in government strategy too. The 2025 Strategic Defence Review called for a new relationship with industry, moving away from a traditional customer-vendor dynamic and towards greater partnership, including earlier engagement with industry.

For smaller and mid-sized engineering businesses, making that transition requires more than technical capability.

It requires commercial leadership with the credibility to sit in front of senior stakeholders within primes and OEMs and have a strategic conversation, not simply a conversation about price, specification and delivery.