Gooch & Housego Brand Guidelines: The 1948 Ilminster Optics Shop That Became G&H

Two crystal cutters who stayed after the war.

Gooch & Housego was founded in Ilminster, Somerset, in 1948 by Archie Gooch and Leslie Housego, according to a 2008 feature in Electro Optics and the company’s own history. The two men brought a wartime trade with them. Electro Optics reported that Gooch had trained at Barr and Stroud, the Glasgow maker of rangefinders and periscopes, and that during the Second World War the pair worked for STC in Greenwich cutting and polishing natural quartz for the crystals used in RAF bomber radios. When the Blitz began, that work was evacuated to Ilminster; after the war STC moved on to a new factory in Devon, and Gooch and Housego stayed to set up on their own.

The new firm was what Electro Optics called an optical jobbing shop, making prisms, lenses, mirrors and windows for larger companies building scientific instruments. The company describes the same beginning as crystal-based scientific optical components, and says those skills remain at the heart of its Ilminster site. Over time it began to design its own products, notably acousto-optic devices, which use sound waves in a crystal to steer or switch a laser beam. Its chief executive told Electro Optics in 2008 that by the early 1990s about half the business came from its own designs.

Gooch remained involved for decades: he retired in the 1990s and, when the company floated in 1997, he was among the oldest chairmen of a newly floated company on the London Stock Exchange, Electro Optics reported. The listing was on the Alternative Investment Market, the company says.

A buyer of specialist optics firms.

The listing paid for a long run of acquisitions. The company’s history lists its first purchase as Optronic Laboratories, a maker of light-measurement instruments, in 1995 (sold in 2018), then Cleveland Crystals of Ohio in 1999, a grower of crystals for electro-optic devices; NEOS Technologies, a US acousto-optics specialist, in 2000; and SIFAM Fiber Optics of Torquay in 2007. Later came General Optics in California (2008), Crystal Technology in Fremont (2011), Kent Periscopes (2016), StingRay Optics (2017), the medical-device designer ITL (2018), GS Plastic Optics of Rochester, New York, and Artemis Optical of Plymouth (both 2023), Phoenix Optical Technologies in St Asaph (2024), Global Photonics in Florida (2025) and IntraAction of Illinois (2026). Some were later sold or merged: the company says it closed Kent Periscopes in 2021 and moved sighting-system manufacturing to Ilminster.

Bringing those firms together raised a naming question. In 2008, the company’s 60th year, it gathered its businesses under one name. Its then chief executive, Gareth Jones, told Electro Optics that it had considered a modern “optronics” name but kept Gooch and Housego, likening it to German optical companies that carry their founders’ names and saying people did not forget it easily. More recently the group has shortened that to G&H: its website now describes itself as “G&H, formerly Gooch & Housego,” and its subsidiaries trade as G&H Torquay, G&H Cleveland and similar names.

What it makes today spans acousto-optics, crystal optics, electro-optics, fibre optics, precision and polymer optics, optical coatings and filters, and lens and vision systems, according to its website. optics.org reported in July 2026 that its aerospace and defence products include parts for periscopes, infrared countermeasures and space-based laser communications, and super-polished components for ring-laser gyroscopes, while for healthcare it supplies optics and subsystems for medical diagnostic instruments, including optical coherence tomography.

Design and documentation.

Photonics companies sell things most people never see. Their lasers sit inside machine tools, their transceivers inside data-centre racks, and their detectors inside instruments, telescopes and physics experiments. So the way they present themselves leans on a small set of images that make light visible: a laser beam crossing a dark optical table, the glowing end of a fibre, a row of pluggable transceiver modules lined up for a switch, or a photomultiplier tube and a sensor chip photographed under studio light against black.

The catalogue matters as much as the advertisement. Many makers of optics and components publish long product catalogues of lenses, mirrors, mounts, filters, tubes and diodes, each part with a drawing, a part number and a page of specifications. That catalogue habit gives much of the sector a shared look: clean technical photography, plenty of white or black space, careful diagrams and an engineering sans or a restrained serif, with colour used sparingly, often for a single accent.

The trade shows are where the industry gathers in person. Photonics West, LASER World of PHOTONICS and OFC, the optical fibre communication conference, are among the events where companies show new lasers, modules and detectors, and their stands and press releases often borrow the same visual language of beams, fibres and glowing chips. Company histories also lean on science: makers of detectors and light sources often point to the research projects and observatories that have used their parts.

This guide sets out what can be checked about each brand — who founded it, who owns it, what it has bought or sold and what it makes — and marks clearly what rests only on the company’s own word. Pending deals are described as pending, with the date they were announced.

From AIM to private ownership.

After nearly three decades on the stock market, the company changed hands in 2026. optics.org reported on 29 July 2026 that G&H’s board had accepted a cash offer from the US private-equity firm Arlington Capital Partners, first disclosed on 16 July, subject to clearance under the UK’s National Security and Investment Act and shareholder approval. On 20 October 2026 the same publication reported that the deal had completed, after shareholders approved it in August and the government cleared it in September; the company dates the completion to 19 October. Chief executive Charlie Peppiatt and finance director James Corte stayed on, and Arlington said it planned to invest in G&H’s UK and US manufacturing sites. optics.org put the workforce at around 1,000 people.

G&H says it now has fourteen manufacturing sites. In Britain it lists Ilminster, Ashford, Torquay, St Asaph and Plymouth; in the United States, sites in California, New Hampshire, Ohio, Florida, Illinois and New York. Its headquarters remain in Ilminster, the market town where the founders set up after the war. optics.org reported that aerospace and defence, industrial lasers and life sciences are its three main markets.

The company’s own description of itself is modest about the past and ambitious about the future: it says that over seven decades it has built a reputation for products that are hard to make, of high quality and long-lived, and that it has turned from a craft-based optical engineering company into a high-technology photonics business. Arlington’s managing director said at completion that G&H had spent more than 75 years controlling, manipulating and focusing light.

For a design guide, Gooch & Housego shows a founders’ name kept as a mark of craft, then shortened to initials as the group grew. Compare Coherent and Thorlabs, two more photonics makers in this series. For this guide we use a Somerset slate, a warm stone and a pale crystal grey with a serif, an unofficial interpretation; no product or logo is reproduced.

Keep Gooch & Housego’s identity on hand — save it to a board in the Made Good inspiration library.