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Aerospace · Defence

A long-term home for specialist aerospace and defence businesses.

35B Holdings acquires and grows established aerospace and defence businesses that keep critical platforms available and compliant. We offer founders a confidential, flexible route to succession, and ownership for the long term.

Military aviation

Front-line fast-jet pilot and instructor, with operational command experience standing up the UK’s new fifth-generation fighter fleet.

Defence acquisition

Led multi-billion-pound, multinational combat aircraft acquisition programmes across UK, US, Australian and allied governments and industry.

Capital, markets and ownership

Principal investing in defence technology, fixed-income markets and private equity, with board experience.

A typical platform: about five years of design, ten years of production, and more than thirty years in service. 35B invests across the in-service years. Design Production In service, where we invest −5Year 0+10 +20+30+35

Many military, civil and space platforms built today will still be operating in 2060. The companies that keep them operational need owners on the same timescale.

What we invest in

Components and obsolescence management

Specialist and legacy parts that keep long-life platforms available after the original source has gone.

Repair, overhaul and fleet support

Approved repair, overhaul and spares support for civil and military fleets.

Testing, qualification and certification

Accredited testing, calibration and certification that gets equipment into service.

Specialist manufacturing and engineering

Precision engineering and low-volume, high-reliability production.

Civil aerospaceMilitary aviationLand and maritime defenceSpace

Acquisitions shaped around you

No two owners are the same. We shape each deal around what you, your team and the business need.

Continuity

Your name, your people and your sites stay. We build on what works.

Flexibility

Full or partial sale, a phased handover, or a continuing role for you and your team.

Confidentiality

Conversations stay private. We never contact customers, suppliers or staff without your agreement.

Sector knowledge

We know approvals, procurement and fleet support from the inside.

What happens next

  1. A private conversation

    An informal call or meeting about your business and what you need.

  2. Mutual fit

    We share how we would own and grow it. Either side can stop there.

  3. Indicative proposal

    A clear outline of value, structure and your role, before any detailed work.

  4. Careful diligence

    A small team, at your pace, with staff and customers included only when you choose.

What we look for

LocationUK and Europe
EBITDA£1m – £5m
RevenueTypically £5m – £40m
ProfitabilityEstablished and profitable
OwnershipFounder, family or management
CustomersCivil, defence or both

Thinking about the future of your business? We would value a confidential conversation.

Enquiries are read only by the partners and are never shared.