Thorn Lighting
Thorn Lighting
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Thorn Lighting

Thorn Lighting Ltd, a subsidiary of the Zumtobel Group, is a global supplier of both outdoor and indoor luminaires and integrated controls.

Thorn was founded when Sir Jules Thorn started The Electric Lamp Service Company Ltd, in 1928, dealing in incandescent filament lamps. In 1936, renamed Thorn Electrical Industries, the company was floated on the London Stock Exchange. Continuous post World War II expansion followed and the organisation seized a variety of lighting, engineering and consumer electronics businesses, merging with EMI in 1979 to create Thorn EMI, which itself demerged in the year 1996.

In 1994, following a leveraged management buy-out, Thorn Lighting Ltd floated on the London Stock Exchange as TLG plc (the Thorn Lighting Group) until it was acquired by Wassall plc four years later. In 2000, Wassall plc was purchased in order to merge TLG with the luminaire business of the Zumtobel Group, an acquisition financed with the assistance of private equity firm KKR who subsequently reduced its position. Thorn is now fully owned by the Zumtobel Group.

The Thorn brand started life as the Electric Lamp Service Company, which was later incorporated by Jules Thorn on 29 March 1928, importing incandescent filament lamps and radio valves from the continent. Faced with increased import duties, introduced to aid British manufacturing, Jules Thorn bought his first lighting factory, the Atlas Lamp Works Ltd in Edmonton, north London in 1932 and began making light bulbs by the end of 1933. In 1936 the company went public as Thorn Electrical Industries. The same year they acquired the freehold property known as Atlas Works, which they previously leased.

The lamp businesses prospered until 1939 when production was geared to military needs. When war broke out, a second lamp site, run by the Vale Royal Electric Lamp Company, was bought in nearby Tottenham in case Edmonton was bombed.

When World War II ended, Jules Thorn continued expansion through investing in new plants, partnerships and acquisitions, including the opening of an incandescent lamp operation in Merthyr Tydfil, South Wales in 1947; a technology transfer with Sylvania Electric Products to mass-produce tubular fluorescent lamps in Enfield, north London and taking over 51% of Ekco-Ensign Electric (Ekco) in 1950, which added a further incandescent lamp factory – in Preston, Lancashire.

In 1951, Thorn took over Smart & Brown (Engineers) Ltd's luminaire factory at Spennymoor, near Durham. In the mid-1950s specialist incandescent lamp factories were opened in Buckie, Scotland and in Wimbledon, London (the Omega Electric Lamp Works Ltd).

In 1957 they brought all the lighting activities under Atlas Lighting Limited.

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