What Gooch & Housego does

Gooch & Housego PLC (LSE: GHH) is a vertically integrated photonics technology company headquartered in Ilminster, Somerset, United Kingdom, with over 75 years of operating history and 501–1,000 employees. The company designs, engineers, and manufactures optical components, modules, and subassemblies across nine integrated technology areas: acousto-optics, crystal optics, electro-optics, fiber optics, precision optics, polymer optics, optical coatings and filters, lens systems, and vision systems. A distinctive capability is in-house crystal growth for critical materials including tellurium dioxide, lithium niobate, BBO, and KDP/KD*P, combined with proprietary processes such as Hy-Per Bond™ adhesive-free bonding and magnetorheological finishing (MRF®). The company serves three end-markets — Aerospace & Defense, Industrial & Telecom, and Life Sciences — and also offers end-to-end medical device design and manufacturing services through its G&H | ITL division.

G&H operates a B2B OEM supplier model, selling custom and standard photonic components and subsystems directly to defense primes, industrial laser manufacturers, semiconductor equipment makers, medical device OEMs, and telecom equipment companies. Revenue is generated through hardware sales on a quote-based, project-negotiated pricing model, with no publicly disclosed list pricing. The company has executed a sustained acquisition program — ITL (2018), GS Optics and GS Plastic Optics (2023), Artemis Optical (2023), Phoenix Optical (2024), and Global Photonics (2025) — to expand capabilities across the photonics value chain and enter adjacent geographies and verticals. It holds a broad certification portfolio spanning ITAR, AS9100, ISO 13485, FDA 21 CFR Part 820, and EU MDR, which collectively function as a regulatory barrier to entry in defense and medical device markets.

For fiscal year ending September 2025, G&H reported revenue of £150.5 million (10.7% YoY growth), adjusted operating profit of £14.4 million (up 37.3%), and adjusted profit before tax of £11.9 million (up 46.8%). As of March 2026, the order book reached a record £167.3 million (up 16.5% YoY), with H1 FY2026 revenue of £81.9 million (up 9.1% on an organic constant currency basis). Management cites defense as the primary growth engine, supported by quantum, semiconductor, and life sciences expansion. Market capitalization stood at approximately £270 million in early June 2026, and the company secured a $10 million debt facility from NatWest in May 2026 to fund manufacturing expansion.

Name

Gooch & Housego

Legal name

Gooch & Housego PLC

Website

https://gandh.com

Company type

Public

Founded year

1950

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Gooch & Housego PLC is a UK-based vertically integrated photonics manufacturer supplying optical components, modules, and subsystems to OEM customers across aerospace & defense, industrial & telecom, and life sciences markets, with FY2025 revenue of £150.5M.

Ownership category

akta.pro rank

Product category

Photonics Components

NAICS

Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511)

SIC

Optical Instruments & Lenses (3827)

akta.pro primary industry

Optoelectronics & Photonics (LED/Laser/Optical ICs) (HDAHAAAH)

Keywords

• Photonics components
• Optical systems
• Acousto-optic devices
• Precision optics
• Medical device manufacturing

Headquarters

HQ city

Ilminster

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Photonics Components and Optical Systems Sales: G&H generates revenue through the manufacture and sale of photonics components and optical systems to OEM customers across aerospace/defense, industrial/telecom, and life sciences markets. Revenue is primarily from direct sales of standard and custom optical components, modules, and subassemblies.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Gooch & Housego (G&H) designs, engineers, and manufactures photonics components and optical systems — including acousto-optic, electro-optic, fiber-optic, crystal, precision, polymer, and coated optics plus ruggedized lens and vision systems — selling these as B2B OEM inputs to aerospace & defense, industrial & telecom, and life sciences customers. The company also provides end-to-end medical device design and contract manufacturing services through its G&H | ITL division.

Product overview

Gooch & Housego (G&H) is a photonics technology company offering a unified portfolio of optical components, optical systems, and medical device manufacturing services. The core product portfolio comprises nine integrated technology areas: Acousto-Optics (deflectors, frequency shifters, modulators, Q-switches, and RF drivers operating at rates exceeding 250 MHz), Crystal Optics (homegrown crystals including lithium niobate, BBO, TeO₂), Electro-Optics (Pockels cells and drivers), Fiber Optics (Fiber-Q coupled modulators, SM/PM couplers, ruggedized couplers), Precision Optics (mirrors, lenses, prisms, beamsplitters, ring laser gyroscope components), Polymer Optics (via G&H | GS Optics brand), Optical Coatings & Filters (dielectric, metallic, hybrid coatings), Lens Systems (via StingRay brand for SWIR/MWIR/LWIR), and Vision Systems (via G&H | Kent brand for armored vehicle periscopes). The G&H | ITL division provides complementary end-to-end medical device design and manufacturing services. The company also operates acquired brands including G&H | Artemis (thin-film coatings) and G&H | Phoenix (CNC optical polishing). The portfolio serves industrial, aerospace & defense, space, quantum, and life sciences applications.

Differentiator

Problem solved

Functional benefit

Brands

• G&H | ITL: End-to-end design and manufacturing services for medical devices, in-vitro diagnostics, and laboratory instruments. Previously Integrated Technologies Ltd, acquired in August 2018.
• G&H | Kent
• G&H | StingRay
• G&H | GS Optics
• G&H | Artemis
• G&H | Phoenix

Products and services

• Acousto-Optics Acousto-optic devices and RF drivers for pulsed laser control — deflectors, frequency shifters, modulators, multi-channel modulators, Q-switches, and tunable filters with operating rates exceeding 250 MHz. Used by OEMs in industrial lasers, quantum research, defense and life sciences.
• Crystal Optics Homegrown crystal optics manufactured from lithium niobate, BBO, cadmium sulfide, cadmium selenide, KDP, KD*P, and tellurium dioxide (TeO2) for use in acousto-optic modulators, Pockels cells, waveplates, and waveguides. Supplied to OEM photonics manufacturers.
• Electro-Optics Electro-optic devices manufactured from home-grown crystals — including Pockels cells, Pockels cell drivers, and lithium niobate Q-switches — for pulsed laser control and optical switching applications across industrial, defense, and life sciences customers.
• Fiber Optics Active, passive, and modular fiber optic components including Fiber-Q® fiber-coupled modulators, high power combiners, PM couplers, polarization diverse receivers, ruggedized couplers, and SM couplers — qualified and deployed in space, subsea, and terrestrial applications.
• Precision Optics Custom precision optical components — planar and aspheric optics, prisms, mirrors, beamsplitters, corner cubes, germanium optics, lenses, optical domes, reticles, ring laser gyroscope components, and windows/flats — for aerospace, defense, medical, and scientific applications.
• Polymer Optics Precision-molded plastic optical components — refractive, reflective, diffractive, and hybrid polymer optics — delivered under the G&H | GS Optics brand for medical, defense, aerospace, and industrial applications.
• Optical Coatings & Filters High-performance optical coatings and filters — dielectric, metallic, and hybrid coatings applied via ion-assisted deposition, e-beam evaporation, or sputtering — including narrowband and broadband filters, beamsplitters, polarizers, and mirrors for laser systems, imaging optics, and sensing platforms.
• Lens Systems Ruggedized lens systems under the G&H | StingRay brand — fixed focal length assemblies, continuous zoom systems, broadband infrared lens systems, custom optical systems, and head-up/helmet-mounted display systems for UV, visible, SWIR, MWIR, and LWIR applications in defense and aerospace.
• Vision Systems Periscopes and sighting systems for armored fighting vehicles — including embedded image periscopes, enhanced driver vision systems, unity vision periscopes, and commander/gunner sights — with heated windows, laser protection, and EMC shielding options, delivered under the G&H | Kent brand.
• G&H | ITL Medical Device Design and Manufacturing Services End-to-end medical device design and manufacturing services — concept development, detailed design, prototyping, pilot production, and full-scale manufacturing for Class I, IIa, IIb, and III medical devices and IVD medical devices — delivered under ISO 13485 and FDA compliance by G&H | ITL for medical device OEMs and diagnostics companies.
• Garnet™ Germanium-free MWIR Lens Assemblies Germanium-free mid-wave infrared (MWIR) lens assemblies under the Garnet™ brand that provide supply-resilient alternatives for defense and aerospace imaging applications, reducing reliance on constrained germanium supply.

Quantifiable outcome

• Over 250,000 military laser protection filters delivered for top-tier vehicles including Abrams Tank and Stryker series
• +3 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Four partnerships are on record, tiered core.

• Global PhotonicscoreStrategic or Co-development Partner · 1 April 2026Acquired by G&H in 2025 for $17.5M (1.6x revenue and 9.7x normalized EBITDA multiples). The acquisition has been critical to securing new Defence orders from customers in the US, UK and Europe. Integration is proceeding to plan.
• Phoenix OpticalcoreStrategic or Co-development Partner · 1 January 2026Acquired by G&H, with integration proceeding to plan. The acquisition has been instrumental in securing new Defence orders from customers in the US, UK and Europe.
• Artemis Optical Holdings LtdcoreStrategic or Co-development Partner · 1 July 2023Acquired by G&H for up to GBP8.9 million to enhance capabilities in thin-film coatings for aerospace, defence, industrial, and life sciences markets. Now operating as G&H | Artemis.
• GS Optics LLCcoreStrategic or Co-development Partner · 1 June 2023Acquired by G&H for up to USD15.7 million to expand its presence in the US life sciences sector and enhance its capabilities in polymer optics. Now operating as G&H | GS Optics.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Edmund Optics: Edmund Optics manufactures optical components including lenses, prisms, mirrors, and filters for industrial, life sciences, and defense markets. It is highly comparable to G&H's precision optics, optical coatings, and lens systems product lines with overlapping customer base.
• Thorlabs: Thorlabs is a vertically integrated photonics components and instruments manufacturer serving similar OEM customers in research, life sciences, and industrial laser markets. Both companies offer a broad catalog of precision optics, lasers, and fiber optic components with comparable B2B go-to-market motions.
• Excelitas Technologies: Excelitas Technologies manufactures photonic and optical components for life sciences, defense, aerospace, and industrial markets. Highly comparable to G&H across acousto-optic devices, infrared optics, and ruggedized imaging systems with similar defense customer base.
• Hamamatsu Photonics: Hamamatsu Photonics manufactures optoelectronic components, photodetectors, and photonic systems for scientific, medical, and industrial applications. Comparable to G&H's electro-optic and fiber optic product lines with similar mission-critical OEM customer base.
• Jenoptik: Jenoptik is a European photonics company with divisions covering optical systems, laser processing, and defense optics. Comparable to G&H in industrial laser optics, defense periscope/sighting systems, and precision components serving automotive, semiconductor, and aerospace customers.

Broad incumbents

• Coherent (formerly II-VI): Coherent is a global photonics and semiconductor equipment company with materials, components, and laser systems. Overlaps with G&H in crystal optics, fiber optics, and laser components for industrial, defense, and life sciences applications, though at far greater scale.
• MKS Instruments: MKS Instruments is a larger photonics and electronics equipment manufacturer serving semiconductor, industrial, and life sciences markets. Overlaps with G&H in laser optics and photonics components but at substantially greater scale and with broader portfolio including vacuum/instrumentation.
• Lumentum: Lumentum designs and manufactures optical and photonic products for telecom, industrial, and 3D sensing markets. Comparable to G&H's fiber optics and laser component portfolio with overlapping OEM customers in telecom and industrial laser markets.
• Hoya Corporation: Hoya Corporation is a Japanese optics manufacturer producing optical glass, lenses, and photonics components for semiconductor, life sciences, and industrial applications. Comparable to G&H's crystal optics and precision optics manufacturing with overlapping semiconductor and medical customer base.
• Crystalline Mirror Solutions / FLIR (Teledyne): Teledyne FLIR manufactures thermal imaging and infrared optics for defense, industrial, and security applications. Comparable to G&H's StingRay MWIR/LWIR lens systems and infrared countermeasures portfolio serving overlapping defense customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/ghphotonics
• YouTubeyoutube.com/channel/UCTdPLC_mrldAh9skaVCO0HQ
• LinkedInlinkedin.com/company/20152129
• Instagraminstagram.com/gandhphotonics
• Facebookfacebook.com/goochandhousego

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A17 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Gooch & Housego